Trasnochar Conjugation in Spanish
The Spanish verb trasnochar means to stay up late, and it is a verb you will use again and again once you know it. Trasnochar means to stay up late, and it is the verb for going to bed after midnight: trasnochar por una fiesta, trasnochar estudiando. It is a fully regular -ar verb. Like every Spanish verb, trasnochar changes its ending for each person and tense, and this page gives you the complete picture: every tense, every person, the gerund and the past participle, all from the verified conjugation tables. For example, in the present tense you say trasnocho por una fiesta el sábado, and in the preterite you say trasnoché con amigos hasta las tres. Work through the tables below, read the notes for each tense, and then test yourself with the examples, the common mistakes and the quiz at the end of the page.
Quick facts
- Infinitive: trasnochar
- English: to stay up late
- Verb type: regular -ar verb
- Ending: -ar
- Gerund: trasnochando
- Past participle: trasnochado
- Auxiliary verb: haber (all perfect tenses are formed with haber + trasnochado)
Pronunciation is not listed on this page: the verified tables do not include IPA for trasnochar, so no pronunciation is given rather than an invented one. Trasnochar is fully regular: trasnoché, trasnochaba, trasnocharé.
Full conjugation tables
Every form below comes from the verified conjugation tables for trasnochar. The imperfect subjunctive is shown in its -ra forms; the -se forms use the same stem. For reflexive verbs, the pronoun column shows the reflexive pronoun that goes before each form.
Present indicative
| Person | Form |
|---|---|
| yo | trasnocho |
| tú | trasnochas |
| él/ella/Ud. | trasnocha |
| nosotros/as | trasnochamos |
| vosotros/as | trasnocháis |
| ellos/ellas/Uds. | trasnochan |
Preterite
| Person | Form |
|---|---|
| yo | trasnoché |
| tú | trasnochaste |
| él/ella/Ud. | trasnochó |
| nosotros/as | trasnochamos |
| vosotros/as | trasnochasteis |
| ellos/ellas/Uds. | trasnocharon |
Imperfect
| Person | Form |
|---|---|
| yo | trasnochaba |
| tú | trasnochabas |
| él/ella/Ud. | trasnochaba |
| nosotros/as | trasnochábamos |
| vosotros/as | trasnochabais |
| ellos/ellas/Uds. | trasnochaban |
Future
| Person | Form |
|---|---|
| yo | trasnocharé |
| tú | trasnocharás |
| él/ella/Ud. | trasnochará |
| nosotros/as | trasnocharemos |
| vosotros/as | trasnocharéis |
| ellos/ellas/Uds. | trasnocharán |
Conditional
| Person | Form |
|---|---|
| yo | trasnocharía |
| tú | trasnocharías |
| él/ella/Ud. | trasnocharía |
| nosotros/as | trasnocharíamos |
| vosotros/as | trasnocharíais |
| ellos/ellas/Uds. | trasnocharían |
Present perfect
| Person | Form |
|---|---|
| yo | he trasnochado |
| tú | has trasnochado |
| él/ella/Ud. | ha trasnochado |
| nosotros/as | hemos trasnochado |
| vosotros/as | habéis trasnochado |
| ellos/ellas/Uds. | han trasnochado |
Pluperfect
| Person | Form |
|---|---|
| yo | había trasnochado |
| tú | habías trasnochado |
| él/ella/Ud. | había trasnochado |
| nosotros/as | habíamos trasnochado |
| vosotros/as | habíais trasnochado |
| ellos/ellas/Uds. | habían trasnochado |
Future perfect
| Person | Form |
|---|---|
| yo | habré trasnochado |
| tú | habrás trasnochado |
| él/ella/Ud. | habrá trasnochado |
| nosotros/as | habremos trasnochado |
| vosotros/as | habréis trasnochado |
| ellos/ellas/Uds. | habrán trasnochado |
Conditional perfect
| Person | Form |
|---|---|
| yo | habría trasnochado |
| tú | habrías trasnochado |
| él/ella/Ud. | habría trasnochado |
| nosotros/as | habríamos trasnochado |
| vosotros/as | habríais trasnochado |
| ellos/ellas/Uds. | habrían trasnochado |
Present subjunctive
| Person | Form |
|---|---|
| yo | trasnoche |
| tú | trasnoches |
| él/ella/Ud. | trasnoche |
| nosotros/as | trasnochemos |
| vosotros/as | trasnochéis |
| ellos/ellas/Uds. | trasnochen |
Imperfect subjunctive (-ra)
| Person | Form |
|---|---|
| yo | trasnochara |
| tú | trasnocharas |
| él/ella/Ud. | trasnochara |
| nosotros/as | trasnocháramos |
| vosotros/as | trasnocharais |
| ellos/ellas/Uds. | trasnocharan |
Imperative (affirmative)
| Person | Form |
|---|---|
| tú | trasnocha |
| él/ella/Ud. | trasnoche |
| nosotros/as | trasnochemos |
| vosotros/as | trasnochad |
| ellos/ellas/Uds. | trasnochen |
Imperative (negative)
| Person | Form |
|---|---|
| tú | trasnoches |
| él/ella/Ud. | trasnoche |
| nosotros/as | trasnochemos |
| vosotros/as | trasnochéis |
| ellos/ellas/Uds. | trasnochen |
Gerund and past participle
| Form | Spanish | Use |
|---|---|---|
| Gerund | trasnochando | with estar for the progressive: estoy trasnochando |
| Past participle | trasnochado | with haber for the perfect tenses: he trasnochado |
How to use each tense
Present indicative
Use the present for routines, general facts and what is happening right now. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the present looks like this in a real sentence: Trasnocho por una fiesta el sábado. Learn the present forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Preterite
Use the preterite for finished actions with a clear end, often with ayer, el año pasado or anoche. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the preterite looks like this in a real sentence: Ayer, trasnoché estudiando para el examen. Learn the preterite forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Imperfect
Use the imperfect for background, habits and actions in progress in the past, often with de niño, antes or mientras. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the imperfect looks like this in a real sentence: De niño, trasnochaba con amigos hasta las tres. Learn the imperfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Future
Use the future for plans, predictions and promises, often with mañana, el año que viene or pronto. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the future looks like this in a real sentence: Mañana, trasnocharé viendo la televisión. Learn the future forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Conditional
Use the conditional for polite requests, hypotheticals and what would happen, often with si clauses. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the conditional looks like this in a real sentence: Trasnocharía por una fiesta el sábado si pudiera. Learn the conditional forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Present perfect
Use the present perfect for recent actions and experiences, often with hoy, esta semana or ya. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the present perfect looks like this in a real sentence: Hoy, he trasnochado estudiando para el examen. Learn the present perfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Pluperfect
Use the pluperfect when one past action happened before another past action. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the pluperfect looks like this in a real sentence: Había trasnochado con amigos hasta las tres antes de salir. Learn the pluperfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Future perfect
Use the future perfect for something that will already be finished by a future time. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the future perfect looks like this in a real sentence: Para mañana, habré trasnochado viendo la televisión. Learn the future perfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Conditional perfect
Use the conditional perfect for what would have happened under different conditions. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the conditional perfect looks like this in a real sentence: Habría trasnochado por una fiesta el sábado con más tiempo. Learn the conditional perfect forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Present subjunctive
Use the present subjunctive after expressions of wish, doubt, emotion and hope, such as espero que or quiero que. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the present subjunctive looks like this in a real sentence: Espero que él trasnoche estudiando para el examen. Learn the present subjunctive forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Imperfect subjunctive (-ra)
Use the imperfect subjunctive after past wishes and in si clauses about the past, and note the -ra forms shown here; the -se forms use the same stem. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the imperfect subjunctive looks like this in a real sentence: Si él trasnochara con amigos hasta las tres, todo cambiaría. Learn the imperfect subjunctive forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Imperative (affirmative)
Use the affirmative imperative for direct commands, instructions and invitations. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the affirmative imperative looks like this in a real sentence: ¡Trasnocha viendo la televisión! Learn the affirmative imperative forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Imperative (negative)
Use the negative imperative, always with no, to tell someone not to do something. For this verb the tense is regular, so the forms follow the standard endings for its verb class. For trasnochar, the negative imperative looks like this in a real sentence: No trasnoches por una fiesta el sábado. Learn the negative imperative forms in the table above alongside this example, and notice how the ending, not the stem, usually carries the meaning of the tense.
Example sentences
Ten natural sentences with trasnochar, covering different tenses and persons. Each one uses a form from the tables above.
- Trasnocho por una fiesta el sábado. — I stay up late for a party on Saturday.
- Trasnocha estudiando para el examen. — He/she stays up late studying for the exam.
- Ayer, trasnoché con amigos hasta las tres. — Yesterday, I stayed up late with friends until three.
- Antes, nosotros trasnochábamos viendo la televisión. — Before, we used to stay up late watching television.
- Mañana, tú trasnocharás por una fiesta el sábado. — Tomorrow, you will stay up late for a party on Saturday.
- Yo trasnocharía estudiando para el examen si tuviera más tiempo. — I would stay up late studying for the exam if I had more time.
- Él ha trasnochado con amigos hasta las tres. — He has stayed up late with friends until three.
- Espero que él trasnoche viendo la televisión. — I hope he stays up late watching television.
- Yo ya había trasnochado por una fiesta el sábado antes de salir. — I had already stayed up late for a party on Saturday before leaving.
- Ellos trasnochaban estudiando para el examen cuando eran jóvenes. — They used to stay up late studying for the exam when they were young.
Common mistakes
- Wrong: Yo trasnocha por una fiesta el sábado. — Right: Yo trasnocho por una fiesta el sábado. — The person matters: trasnocha is the él/ella/Ud. form, while the yo form is trasnocho. Using the third-person form with yo is one of the most common beginner errors.
- Wrong: Ayer yo trasnocho estudiando para el examen. — Right: Ayer yo trasnoché estudiando para el examen. — The present and the preterite are different tenses: trasnocho is happening now, while trasnoché is a finished action in the past. Use the preterite with ayer.
- Wrong: Treating trasnochar and madrugar as identical in every context. — Right: Trasnochar means to stay up late, while madrugar means to get up early, its opposite. — They overlap, but each has uses the other does not: trasnochar fits sentences such as Trasnocho por una fiesta el sábado, while madrugar belongs in a different sentence. Check the meaning you want before choosing.
- Wrong: Yo soy trasnochado estudiando para el examen. — Right: Yo he trasnochado estudiando para el examen. — Spanish perfect tenses use haber, not ser: he trasnochado, has trasnochado, ha trasnochado. Ser plus the participle makes a passive, not a perfect tense.
- Wrong: De niño, yo trasnoché con amigos hasta las tres todos los días. — Right: De niño, yo trasnochaba con amigos hasta las tres todos los días. — For a repeated habit in the past, use the imperfect (trasnochaba), not the preterite. The preterite (trasnoché) is for one finished action.
Quiz: test yourself
Ten questions on trasnochar. Choose the right form, then check the answer key below.
Complete the sentence: Yo ___ por una fiesta el sábado. (present tense) A. trasnocho B. trasnochas C. trasnocha D. trasnochamos
Complete the sentence: Ayer, él ___ estudiando para el examen. (preterite) A. trasnoché B. trasnochaste C. trasnochamos D. trasnochó
Complete the sentence: Antes, nosotros ___ con amigos hasta las tres. (imperfect) A. trasnochabas B. trasnocho C. trasnochábamos D. trasnochaba
Complete the sentence: Mañana, tú ___ viendo la televisión. (future) A. trasnocharemos B. trasnocharás C. trasnocharé D. trasnochará
Complete the sentence: Yo ___ por una fiesta el sábado si pudiera. (conditional) A. trasnocharía B. trasnocharías C. trasnocharíamos D. trasnocho
Complete the sentence: Espero que él ___ estudiando para el examen. (present subjunctive) A. trasnoches B. trasnochemos C. trasnocho D. trasnoche
Complete the sentence: Si yo ___ con amigos hasta las tres, todo cambiaría. (imperfect subjunctive, -ra form) A. trasnocháramos B. trasnocho C. trasnochara D. trasnocharas
Complete the sentence: Nosotros ___ viendo la televisión. (present perfect) A. ha trasnochado B. hemos trasnochado C. he trasnochado D. has trasnochado
Complete the command: ¡___ por una fiesta el sábado! (affirmative imperative, tú) A. trasnocha B. trasnoche C. trasnochemos D. trasnochad
Which is the gerund of trasnochar, used with estar for the progressive? A. trasnochado B. trasnocho C. trasnoché D. trasnochando
Answer key
- trasnocho — The yo present tense of trasnochar is trasnocho.
- trasnochó — The él/ella/Ud. preterite of trasnochar is trasnochó.
- trasnochábamos — The nosotros/as imperfect of trasnochar is trasnochábamos.
- trasnocharás — The tú future of trasnochar is trasnocharás.
- trasnocharía — The yo conditional of trasnochar is trasnocharía.
- trasnoche — The él/ella/Ud. present subjunctive of trasnochar is trasnoche.
- trasnochara — The yo imperfect subjunctive, -ra form of trasnochar is trasnochara.
- hemos trasnochado — The nosotros/as present perfect of trasnochar is hemos trasnochado.
- trasnocha — The affirmative tú imperative of trasnochar is trasnocha.
- trasnochando — The gerund of trasnochar is trasnochando: estoy trasnochando. The participle trasnochado is used with haber instead.
Frequently asked questions
What does trasnochar mean in English?
Trasnochar means to stay up late. It is used in everyday situations such as Trasnocho por una fiesta el sábado. The exact English wording depends on the context, but the core meaning stays the same across the tenses.
Is trasnochar regular or irregular?
Trasnochar is a fully regular -ar verb, so every tense follows the standard endings for its class. Once you know the regular pattern, you can produce every form on this page, including trasnocho in the present and trasnoché in the preterite.
What is the difference between trasnochar and madrugar?
Trasnochar means to stay up late, while madrugar means to get up early, its opposite. They are easy to confuse because they appear in similar situations, but they are not interchangeable: use trasnochar when you mean to stay up late, as in Trasnocho por una fiesta el sábado, and use madrugar for to get up early, its opposite. When in doubt, check the object of the sentence — it usually shows which verb fits.
How do I say “I stay up late” in the past?
It depends on the kind of past. For one finished action, use the preterite: yo trasnoché estudiando para el examen. For a repeated habit or background in the past, use the imperfect: yo trasnochaba con amigos hasta las tres. For something that has just happened, use the present perfect: yo he trasnochado estudiando para el examen.
How do I practise trasnochar?
Start with the present tense table, then drill the preterite and the imperfect, since those two past tenses cause the most mistakes. Try the trasnochar examples and quiz page for more sentences, and use the Spanish Verb Quiz to test the forms under pressure.
Related links
- Trasnochar in the present tense — the full present-tense table for trasnochar.
- Trasnochar examples and quiz — more example sentences and practice for trasnochar.
- Spanish verbs — the Spanish hub, with every verb and tense guide.
- Transportar conjugation — another -ar verb to compare with trasnochar.
- Triunfar conjugation — another -ar verb to compare with trasnochar.
- Tardar conjugation — another -ar verb to compare with trasnochar.
- Spanish Verb Conjugator — conjugate any Spanish verb in every tense.
- Spanish Verb Quiz — test yourself on real conjugated forms.