Deshacer in the Preterite Tense
Deshacer means “to undo, to take apart”, and this page covers exactly one thing: deshacer in the preterite tense. The preterite is the tense Spanish speakers reach for when they talk about what is finished and done. On this page you will find the full preterite table for deshacer, how the tense is formed for this verb, the situations where it is used, how it differs from the imperfect, worked examples, the mistakes learners make most often, an eight-question quiz with explained answers, and answers to the questions students ask about deshacer in the preterite. For example: “Ayer, yo deshice la maleta al llegar.” — Yesterday, I undid the suitcase on arriving. Everything on this page uses the forms of deshacer exactly as they are conjugated in the preterite, so you can trust every form you see here.
Deshacer in the Preterite Tense — full table
| Person | Form |
|---|---|
| yo | deshice |
| tú | deshiciste |
| él/ella/Ud. | deshizo |
| nosotros/as | deshicimos |
| vosotros/as | deshicisteis |
| ellos/ellas/Uds. | deshicieron |
Gerund: deshaciendo · Past participle: deshecho
The gerund is deshaciendo, which you use with estar to say what is happening right now: “Estoy deshaciendo” means the action of deshacer is in progress at this very moment. The past participle is deshecho, which you use with haber in the perfect tenses: “he deshecho” is the present perfect, used for a completed action. Keep both forms in mind as you read the examples below, because the preterite is only one part of how deshacer is used.
How the preterite of deshacer is formed
Deshacer does not use one regular stem in this tense, so the forms below do not follow the simple stem + endings pattern. This tense is irregular for this verb: it follows the pattern of hacer, with a -g- in the present (as in deshago), a -c- stem in the preterite (as in deshice), and an irregular participle (as in deshecho). Learn the forms in the table rather than guessing them from the infinitive. Learn the six forms as a set: yo deshice, tú deshiciste, él/ella/Ud. deshizo, nosotros/as deshicimos, vosotros/as deshicisteis, ellos/ellas/Uds. deshicieron.
The irregularity of deshacer is in its past participle, deshecho, not in the preterite, so the table above is the whole story for this tense. Remember the participle for the perfect tenses: he deshecho, has deshecho, ha deshecho.
When to use the preterite of deshacer
The preterite is not a single-purpose tense. Below are the five situations where you will use deshacer in the preterite most often. Each one comes with a real example, so read the rule, then say the example out loud.
1. One finished action
The preterite reports a single action that started and finished in the past. The action is done, counted once, and the story moves on. Example: “Ayer, yo deshice la maleta al llegar.” — Yesterday, I undid the suitcase on arriving.
2. A sequence of events
In a story, each preterite form is one step forward in time. When several things happened one after another, the preterite lists them in order. Example: “Nosotros deshicimos el nudo de la cuerda.” — We undid the knot in the rope.
3. A specific time marker
Time words such as ayer, anoche, el año pasado and la semana pasada point to the preterite. They name a finished moment, and the verb must match. Example: “Él deshizo un error con disculpas ayer.” — He undid a mistake with apologies yesterday.
4. A sudden change or interruption
The preterite describes sudden changes and interruptions: something happened, and the situation was different afterwards. Example: “Ellos deshicieron el paquete en la mesa de repente.” — They undid the parcel on the table suddenly.
5. A completed time frame
When an action took place inside a period of time that is now over, the preterite is the right tense, because the period itself is finished. Example: “Tú deshiciste la maleta al llegar la semana pasada.” — You undid the suitcase on arriving last week.
Preterite Tense vs Imperfect: how to choose
The closest tense to the preterite is the imperfect, and choosing between them is one of the hardest decisions in Spanish. The rule is simple: the preterite reports one finished action, while the imperfect describes background, habits in the past, or an action that was in progress when something else happened. The three pairs below use the same verb, so the only thing that changes is whether the action is finished and counted, or ongoing and descriptive. Time words help: ayer and de repente point to the preterite, while mientras and todos los días in the past point to the imperfect.
Preterite Tense: “Ayer, yo deshice la maleta al llegar.” — Yesterday, I undid the suitcase on arriving.
Imperfect: “Yo deshacía la maleta al llegar cada día.” — I used to undo the suitcase on arriving every day.
The preterite sentence reports one finished action; the imperfect sentence describes a habit in the past. Ayer points to the preterite, cada día in the past points to the imperfect.
Preterite Tense: “Anoche, él deshizo el nudo de la cuerda.” — Last night, he undid the knot in the rope.
Imperfect: “Él deshacía el nudo de la cuerda todos los días.” — He used to undo the knot in the rope every day.
Anoche names one finished night, so the preterite is right; todos los días in the past describes a routine, so the imperfect is right.
Preterite Tense: “Nosotros deshicimos un error con disculpas ayer.” — We undid a mistake with apologies yesterday.
Imperfect: “Nosotros deshacíamos un error con disculpas cuando éramos jóvenes.” — We used to undo a mistake with apologies when we were young.
The preterite sentence counts one finished action; the imperfect sentence describes how things used to be. That difference — finished event versus background — is the whole decision.
Example sentences: deshacer in the preterite
Read these eight sentences out loud. They cover all six persons, so by the end you will have seen every form in the table used in a real sentence. Pay attention to the words around the verb — the time expressions, the objects, the other verbs — because those are what make each sentence sound natural.
“Deshice la maleta al llegar.” — I undid the suitcase on arriving.
“Deshiciste el nudo de la cuerda.” — You undid the knot in the rope.
“Deshizo un error con disculpas.” — He/she undid a mistake with apologies.
“Deshicimos el paquete en la mesa.” — We undid the parcel on the table.
“Deshicisteis la maleta al llegar.” — You undid the suitcase on arriving.
“Deshicieron el nudo de la cuerda.” — They undid the knot in the rope.
“Deshice un error con disculpas.” — I undid a mistake with apologies.
“Deshizo el paquete en la mesa.” — He/she undid the parcel on the table.
Common mistakes with deshacer in the preterite
These are the errors learners actually make with this verb in this tense. Each one shows the wrong version, the right version, and why the correction matters.
Wrong: “Ellos deshizo la maleta al llegar.” Right: “Ellos deshicieron la maleta al llegar.” Why: Ellos needs the ellos form deshicieron. The singular deshizo belongs with él, ella or a singular noun.
Wrong: “Ayer yo deshací el nudo de la cuerda.” Right: “Ayer yo deshice el nudo de la cuerda.” Why: Deshacer has an irregular preterite: the correct first-person form is deshice, not the regular deshací.
Wrong: “Nosotros deshiciste un error con disculpas.” Right: “Nosotros deshicimos un error con disculpas.” Why: Nosotros needs deshicimos. The tú form deshiciste belongs with tú.
Wrong: “Ellos deshice el paquete en la mesa.” Right: “Ellos deshicieron el paquete en la mesa.” Why: The verb must agree with its subject. Ellos needs the ellos form deshicieron, not the yo form deshice.
Quiz: deshacer in the preterite
Choose the correct answer for each question, then check the answer key. Every answer is explained, so a wrong answer still teaches you something.
1. Complete the sentence: “Yo ______ la maleta al llegar.” (The suitcase on arriving.)
- (a) deshice
- (b) deshiciste
- (c) deshizo
Answer: deshice — The yo form of deshacer in the preterite is deshice. The other options are the forms for different persons, so they do not agree with the subject.
2. Complete the sentence: “¿Tú ______ el nudo de la cuerda?” (The knot in the rope.)
- (a) deshice
- (b) deshizo
- (c) deshiciste
Answer: deshiciste — The tú form of deshacer in the preterite is deshiciste. The other options are the forms for different persons, so they do not agree with the subject.
3. Complete the sentence: “Él ______ un error con disculpas.” (A mistake with apologies.)
- (a) deshiciste
- (b) deshizo
- (c) deshice
Answer: deshizo — The él/ella/Ud. form of deshacer in the preterite is deshizo. The other options are the forms for different persons, so they do not agree with the subject.
4. Complete the sentence: “Nosotros ______ el paquete en la mesa.” (The parcel on the table.)
- (a) deshicimos
- (b) deshice
- (c) deshiciste
Answer: deshicimos — The nosotros/as form of deshacer in the preterite is deshicimos. The other options are the forms for different persons, so they do not agree with the subject.
5. What is the vosotros/as form of deshacer in the preterite?
- (a) deshice
- (b) deshiciste
- (c) deshicisteis
Answer: deshicisteis — From the table above: vosotros/as takes deshicisteis. Say it with the example sentence “Vosotros deshicisteis la maleta al llegar.” to fix it in your memory.
6. Complete the sentence: “Ellos ______ el nudo de la cuerda.” (The knot in the rope.)
- (a) deshiciste
- (b) deshicieron
- (c) deshice
Answer: deshicieron — The ellos/ellas/Uds. form of deshacer in the preterite is deshicieron. The other options are the forms for different persons, so they do not agree with the subject.
7. Which is the correct yo form of deshacer in the preterite?
- (a) deshice
- (b) deshiciste
- (c) deshizo
Answer: deshice — The yo form is deshice. The other two options are the forms for other persons.
8. Which sentence describes one finished action in the past?
- (a) Yo deshacía la maleta al llegar cada día.
- (b) Mañana, yo desharé la maleta al llegar.
- (c) Ayer, yo deshice la maleta al llegar.
Answer: Ayer, yo deshice la maleta al llegar. — “Ayer, yo deshice la maleta al llegar.” reports a single completed event, so it takes the preterite. The second option describes background or a past habit, and the third looks to the future.
Frequently asked questions
Is deshacer regular in the preterite?
No. Deshacer has an irregular preterite: deshice, deshiciste, deshizo, deshicimos, deshicisteis, deshicieron. Learn these forms as a set rather than deriving them from the infinitive.
What is the past participle of deshacer?
The past participle is deshecho: 'He deshecho' means 'I have undone'. It is used with haber in every perfect tense. The gerund is deshaciendo.
When do I use the preterite instead of the imperfect for deshacer?
Use the preterite for one finished action, as in Ayer, yo deshice la maleta al llegar. Use the imperfect for a repeated habit or background, as in Yo deshacía la maleta al llegar cada día. The time words around the verb usually tell you which one fits.
How do I remember the preterite forms of deshacer?
Say the six forms out loud in order, three times, with a real sentence for each one: yo deshice, tú deshiciste, él/ella/Ud. deshizo, nosotros/as deshicimos, vosotros/as deshicisteis, ellos/ellas/Uds. deshicieron. Then write three of your own sentences with deshacer in the preterite, using the examples on this page as models.
Related pages
- Full conjugation of deshacer — every tense of deshacer in one place.
- Deshacer examples and quiz — more sentences with deshacer and a ten-question quiz.
- Spanish preterite guide — how the preterite works for all Spanish verbs.
- Spanish verbs — the hub for every Spanish verb on VerbFlow.
- Preterite conjugator — conjugate any verb in the preterite instantly.
- Verb quiz — test yourself on deshacer and other verbs.