Tranquilizar Conjugation in Spanish
Introduction
tranquilizar means "to reassure, to calm" in English, and it is one of the verbs you will meet constantly in everyday Spanish — for reassuring and calming someone who is worried. Learning it properly means more than memorising one form: the verb changes across thirteen tenses, and this page gives you every one of them, with the exact forms from the VerbFlow engine, so you can check any person or tense in seconds. Tranquilizar is a irregular -ar verb; z → c spelling change before e verb, and it is regular in its endings, with a spelling change. That matters because the patterns on this page are the patterns you will reuse every time you speak or write. Work through the tables first, then read the notes under each tense — they explain when to use each tense and what to watch out for with this verb in particular. A natural example is: Cada día, yo tranquilizo a mi madre con buenas noticias. — "Every day, I reassure my mother with good news." Once you can say that sentence confidently, try changing the person and the tense using the tables below.
Quick facts
| Infinitive | tranquilizar |
| Translation | to reassure, to calm |
| Verb type | Irregular -ar verb; z → c spelling change before e |
| Gerund | tranquilizando |
| Past participle | tranquilizado |
| Auxiliary | haber (all compound tenses) |
| Irregular tenses | regular in its endings, with a spelling change |
Full conjugation of tranquilizar
Present indicative
| Person | Form |
|---|---|
| yo | tranquilizo |
| tú | tranquilizas |
| él / ella / Ud. | tranquiliza |
| nosotros / nosotras | tranquilizamos |
| vosotros / vosotras | tranquilizáis |
| ellos / ellas / Uds. | tranquilizan |
Preterite
| Person | Form |
|---|---|
| yo | tranquilicé |
| tú | tranquilizaste |
| él / ella / Ud. | tranquilizó |
| nosotros / nosotras | tranquilizamos |
| vosotros / vosotras | tranquilizasteis |
| ellos / ellas / Uds. | tranquilizaron |
Imperfect
| Person | Form |
|---|---|
| yo | tranquilizaba |
| tú | tranquilizabas |
| él / ella / Ud. | tranquilizaba |
| nosotros / nosotras | tranquilizábamos |
| vosotros / vosotras | tranquilizabais |
| ellos / ellas / Uds. | tranquilizaban |
Future
| Person | Form |
|---|---|
| yo | tranquilizaré |
| tú | tranquilizarás |
| él / ella / Ud. | tranquilizará |
| nosotros / nosotras | tranquilizaremos |
| vosotros / vosotras | tranquilizaréis |
| ellos / ellas / Uds. | tranquilizarán |
Conditional
| Person | Form |
|---|---|
| yo | tranquilizaría |
| tú | tranquilizarías |
| él / ella / Ud. | tranquilizaría |
| nosotros / nosotras | tranquilizaríamos |
| vosotros / vosotras | tranquilizaríais |
| ellos / ellas / Uds. | tranquilizarían |
Present subjunctive
| Person | Form |
|---|---|
| yo | tranquilice |
| tú | tranquilices |
| él / ella / Ud. | tranquilice |
| nosotros / nosotras | tranquilicemos |
| vosotros / vosotras | tranquilicéis |
| ellos / ellas / Uds. | tranquilicen |
Imperfect subjunctive (-ra forms)
| Person | Form |
|---|---|
| yo | tranquilizara |
| tú | tranquilizaras |
| él / ella / Ud. | tranquilizara |
| nosotros / nosotras | tranquilizáramos |
| vosotros / vosotras | tranquilizarais |
| ellos / ellas / Uds. | tranquilizaran |
Present perfect
| Person | Form |
|---|---|
| yo | he tranquilizado |
| tú | has tranquilizado |
| él / ella / Ud. | ha tranquilizado |
| nosotros / nosotras | hemos tranquilizado |
| vosotros / vosotras | habéis tranquilizado |
| ellos / ellas / Uds. | han tranquilizado |
Pluperfect
| Person | Form |
|---|---|
| yo | había tranquilizado |
| tú | habías tranquilizado |
| él / ella / Ud. | había tranquilizado |
| nosotros / nosotras | habíamos tranquilizado |
| vosotros / vosotras | habíais tranquilizado |
| ellos / ellas / Uds. | habían tranquilizado |
Future perfect
| Person | Form |
|---|---|
| yo | habré tranquilizado |
| tú | habrás tranquilizado |
| él / ella / Ud. | habrá tranquilizado |
| nosotros / nosotras | habremos tranquilizado |
| vosotros / vosotras | habréis tranquilizado |
| ellos / ellas / Uds. | habrán tranquilizado |
Conditional perfect
| Person | Form |
|---|---|
| yo | habría tranquilizado |
| tú | habrías tranquilizado |
| él / ella / Ud. | habría tranquilizado |
| nosotros / nosotras | habríamos tranquilizado |
| vosotros / vosotras | habríais tranquilizado |
| ellos / ellas / Uds. | habrían tranquilizado |
Imperative — affirmative
| Person | Form |
|---|---|
| tú | tranquiliza |
| él / ella / Ud. | tranquilice |
| nosotros / nosotras | tranquilicemos |
| vosotros / vosotras | tranquilizad |
| ellos / ellas / Uds. | tranquilicen |
Imperative — negative
| Person | Form |
|---|---|
| tú | tranquilices |
| él / ella / Ud. | tranquilice |
| nosotros / nosotras | tranquilicemos |
| vosotros / vosotras | tranquilicéis |
| ellos / ellas / Uds. | tranquilicen |
Gerund: tranquilizando · Past participle: tranquilizado
Tranquilizar in every tense — notes and examples
Present indicative
The present is the tense for habits, facts and what is happening now. It is the first tense to master, because the present subjunctive and the affirmative imperative are both built from the present yo form. Example: Cada día, yo tranquilizo a mi madre con buenas noticias. — "Every day, I reassure my mother with good news."
Preterite
The preterite is for completed actions in the past — things that started and finished at a definite moment. Use it for a single event, a sequence of events, or an action with a clear end. Watch the spelling in the preterite: z becomes c before e, so the yo form is tranquilicé. Example: Ayer, yo tranquilicé a mi madre con buenas noticias. — "Yesterday, I reassured my mother with good news."
Imperfect
The imperfect is for the past without a definite end: habits, background scenes, descriptions and actions in progress when something else happened. It never states when the action finished. Example: Antes, yo tranquilizaba a mi madre con buenas noticias. — "Before, I reassured my mother with good news."
Future
The future is for what will happen, and also for guesses about the present ("I wonder if…"). For regular verbs it is the infinitive plus the endings -é, -ás, -á, -emos, -éis, -án. Example: Mañana, yo tranquilizaré a mi madre con buenas noticias. — "Tomorrow, I will reassure my mother with good news."
Conditional
The conditional is for what would happen — polite requests, hypothetical results and reported expectations. It shares its stem with the future, so any irregular future stem appears here too. Example: Yo tranquilizaría a mi madre con buenas noticias si tuviera la oportunidad. — "I would reassure my mother with good news if I had the chance."
Present subjunctive
The present subjunctive is for wishes, doubts, emotions and other non-facts after que, and after expressions such as ojalá, es importante que or no creo que. It is not a tense for stating facts. Example: Espero que ella tranquilice a mi madre con buenas noticias. — "I hope she will reassure my mother with good news."
Imperfect subjunctive (-ra forms)
The imperfect subjunctive (-ra forms) is for wishes and doubts about the past, and for the if-part of hypothetical sentences (si + imperfect subjunctive, conditional). This page shows the -ra forms from the engine. Example: Si ella tranquilizara a mi madre con buenas noticias, todo cambiaría. — "If she reassured my mother with good news, everything would change."
Present perfect
The present perfect (haber + past participle) is for past actions connected to the present — recent events, experience, or something that has just happened. The auxiliary is always haber. Example: Yo he tranquilizado a los niños durante la tormenta varias veces. — "I have reassured the children during the storm several times."
Pluperfect
The pluperfect (había + past participle) is the past of the past: something that had already happened before another past event. Example: Yo había tranquilizado a mi madre con buenas noticias antes de la reunión. — "I had reassured my mother with good news before the meeting."
Future perfect
The future perfect (habré + past participle) is for something that will already be finished by a future moment, or for a guess about the past. It is less common in speech than the simple future. Example: Para mañana, yo habré tranquilizado a mi madre con buenas noticias. — "By tomorrow, I will have reassured my mother with good news."
Conditional perfect
The conditional perfect (habría + past participle) is for what would have happened — the past of the conditional, used for regrets and unreal past conditions. Example: Yo habría tranquilizado a mi madre con buenas noticias si hubiera tenido tiempo. — "I would have reassured my mother with good news if I had had time."
Imperative — affirmative
The affirmative imperative is for direct orders, instructions and invitations. The tú form comes from the present él/ella form, and the formal, nosotros and plural forms come from the present subjunctive. Example: ¡tranquiliza a mi madre con buenas noticias! — "Reassure my mother with good news!"
Imperative — negative
The negative imperative (no + subjunctive) is for telling someone not to do something. All five persons come from the present subjunctive, which is why they look different from the affirmative tú form. Example: No tranquilices a mi madre con buenas noticias. — "Do not reassure my mother with good news."
Example sentences with tranquilizar
Yo tranquilizo a mi madre con buenas noticias. — "I reassure my mother with good news."
¿Tú tranquilizas a los niños durante la tormenta? — "Do you reassure the children during the storm?"
Ayer, él tranquilizó a mi madre con buenas noticias. — "Yesterday, he reassured my mother with good news."
Nosotros tranquilizamos a los niños durante la tormenta a tiempo. — "We reassured the children during the storm on time."
Antes, ellos tranquilizaban a mi madre con buenas noticias. — "Before, they reassured my mother with good news."
Mañana, yo tranquilizaré a los niños durante la tormenta. — "Tomorrow, I will reassure the children during the storm."
Nosotros tranquilizaríamos a mi madre con buenas noticias si pudiéramos. — "We would reassure my mother with good news if we could."
Yo he tranquilizado a los niños durante la tormenta varias veces. — "I have reassured the children during the storm several times."
Espero que ella tranquilice a mi madre con buenas noticias. — "I hope she will reassure my mother with good news."
Ahora mismo, yo estoy tranquilizando a los niños durante la tormenta. — "Right now, I am reassuring the children during the storm."
Common mistakes with tranquilizar
1. Writing ✗ tranquilizé instead of the correct preterite form
The correct preterite yo form is tranquilicé: the spelling changes before e (g → gu, c → qu, z → c) so the sound stays the same. Writing it with the infinitive spelling is a spelling mistake, even though it sounds identical.
2. Confusing tranquilizar with calmar (to calm)
tranquilizar means "to reassure, to calm", while calmar means "to calm". They overlap in English but they are not interchangeable in Spanish: use tranquilizar when you mean reassuring and calming someone who is worried, and calmar for its own meaning. Check the conjugation of calmar before choosing.
3. Mixing up the preterite and the imperfect
Ayer yo tranquilicé a mi madre con buenas noticias (preterite: one finished event yesterday) is not the same as antes yo tranquilizaba a mi madre con buenas noticias (imperfect: what used to happen). If you can add "yesterday" or "last week", you usually want the preterite; if you can add "used to", you want the imperfect.
4. Using estar instead of haber in the perfect tenses
The present perfect is he tranquilizado (haber + participle), never estoy tranquilizado. Haber is the only auxiliary for compound tenses in Spanish.
5. Dropping the preposition before the complement
tranquilizar takes a here: yo tranquilizo a mi madre con buenas noticias. Dropping the preposition (yo tranquilizo mi madre con buenas noticias) sounds wrong to a native speaker, so learn the verb together with its preposition.
Quiz: tranquilizar
1. Yo ___ a mi madre con buenas noticias.
a. tranquiliza b. tranquilizo c. tranquilizan
2. Ella ___ a mi madre con buenas noticias.
a. tranquilizo b. tranquiliza c. tranquilizan
3. Ayer, yo ___ a mi madre con buenas noticias.
a. tranquilizo b. tranquilicé c. tranquiliza
4. Ellos ___ a mi madre con buenas noticias ayer.
a. tranquilizo b. tranquilizaron c. tranquiliza
5. Antes, yo ___ a mi madre con buenas noticias.
a. tranquilizo b. tranquilizaba c. tranquiliza
6. Mañana, yo ___ a mi madre con buenas noticias.
a. tranquilizo b. tranquilizaré c. tranquiliza
7. Yo ___ a mi madre con buenas noticias si pudiera.
a. tranquilizo b. tranquilizaría c. tranquiliza
8. Espero que ella ___ a mi madre con buenas noticias.
a. tranquilizo b. tranquilice c. tranquiliza
9. Ahora mismo, yo estoy ___ a los niños durante la tormenta.
a. tranquilizado b. tranquilizando c. tranquilizo
10. Yo he ___ a los niños durante la tormenta varias veces.
a. tranquilizando b. tranquilizado c. tranquilizo
Answer key
tranquilizo — present tense, yo form.
tranquiliza — present tense, él/ella form.
tranquilicé — preterite, yo form — a finished action yesterday.
tranquilizaron — preterite, ellos/ellas form.
tranquilizaba — imperfect, yo form — a past habit.
tranquilizaré — future, yo form.
tranquilizaría — conditional, yo form — a hypothetical.
tranquilice — present subjunctive after 'espero que'.
tranquilizando — gerund — the progressive is estar + gerund.
tranquilizado — past participle — the present perfect is haber + participle.
Frequently asked questions about tranquilizar
What does tranquilizar mean in English?
Tranquilizar means "to reassure, to calm". It is used for reassuring and calming someone who is worried. A simple example is yo tranquilizo a mi madre con buenas noticias — "I reassure my mother with good news."
Is tranquilizar regular or irregular?
Tranquilizar is a irregular -ar verb; z → c spelling change before e verb, and it is regular in its endings, with a spelling change. The forms that most often catch learners out are the present yo form tranquilizo, the preterite yo form tranquilicé and the past participle tranquilizado — learn those three first, then fill in the rest from the tables above.
What is the gerund and the past participle of tranquilizar?
The gerund is tranquilizando (used for the progressive: estoy tranquilizando) and the past participle is tranquilizado (used with haber in all perfect tenses: he tranquilizado). Both forms are used constantly, so they are worth memorising on their own.
How do I say "I reassure" in the past?
It depends on the meaning. For one finished action use the preterite: ayer yo tranquilicé a mi madre con buenas noticias — "yesterday I reassured my mother with good news". For a past habit or background use the imperfect: antes yo tranquilizaba a mi madre con buenas noticias — "before, I reassured my mother with good news". The mistake most learners make is using one for the other.
Does tranquilizar take the subjunctive?
Not usually. Tranquilizar on its own takes the indicative — yo tranquilizo a mi madre con buenas noticias. You will meet the subjunctive with tranquilizar only inside a larger construction that itself triggers it, such as no creo que or es importante que, and then the subjunctive form is tranquilice.