Conjugation of 'Dormir'

Stem Changes Sometimes Even When Unstressed

woman sleeping for article on dormir
Duerme afuera. (She is sleeping outside.). Lucas Lima 91/Creative Commons.

The conjugation of dormir, which usually means to sleep, is irregular in that the stem of -o- becomes -ue- when stressed and sometimes becomes -u- when unstressed. The only other verb that follows the same pattern is the rarely used adormir, which means to calm or to cause sleep.

Irregular forms are shown below in boldface. Translations are given as a guide and in real life may vary with context.

Infinitive of Dormir

dormir (to sleep)

Gerund of Dormir

durmiendo (sleeping)

Participle of Dormir

dormido (slept)

Present Indicative of Dormir

yo duermo, tú duermes, usted/él/ella duerme, nosotros/as dormimos, vosotros/as dormís, ustedes/ellos/ellas duermen (I sleep, you sleep, he sleeps, etc.)

Preterite of Dormir

yo dormí, tú dormiste, usted/él/ella durmió, nosotros/as dormimos, vosotros/as dormisteis, ustedes/ellos/ellas durmieron (I slept, you slept, she slept, etc.)

Imperfect Indicative of Dormir

yo dormía, tú dormías, usted/él/ella dormía, nosotros/as dormíamos, vosotros/as dormíais, ustedes/ellos/ellas dormían (I used to sleep, you used to sleep, he used to sleep, etc.)

Future Indicative of Dormir

yo dormiré, tú dormirás, usted/él/ella dormirá, nosotros/as dormiremos, vosotros/as dormiréis, ustedes/ellos/ellas dormirán (I will sleep, you will sleep, he will sleep, etc.)

Conditional of Dormir

yo dormiría, tú dormirías, usted/él/ella dormiría, nosotros/as dormiríamos, vosotros/as dormiríais, ustedes/ellos/ellas dormirían (I would sleep, you would sleep, she would sleep, etc.)

Present Subjunctive of Dormir

que yo duerma, que tú duermas, que usted/él/ella duerma, que nosotros/as durmamos, que vosotros/as durmáis, que ustedes/ellos/ellas duerman (that I sleep, that you sleep, that she sleep, etc.)

Imperfect Subjunctive of Dormir

que yo durmiera (durmiese), que tú durmieras (durmieses), que usted/él/ella durmiera (durmiese), que nosotros/as durmiéramos (durmiésemos), que vosotros/as durmierais (durmieseis), que ustedes/ellos/ellas durmieran (durmiesen) (that I slept, that you slept, that he slept, etc.)

Imperative of Dormir

duerme (tú), no duermas (tú), duerma (usted), durmamos (nosotros/as), dormid (vosotros/as), no durmáis (vosotros/as), duerman (ustedes) (sleep, don't sleep, sleep, let's sleep, etc.)

Compound Tenses of Dormir

The perfect tenses are made by using the appropriate form of haber and the past participle, slept. The progressive tenses use estar with the gerund, sleeping.

Sample Sentences Showing Conjugation of Dormir

La pequeña ha decidido que quiere dormir en la cama conmigo. (The little girl has decided she wants to sleep in the bed with me. Infinitive.)

No sé lo que pasó; estaba durmiendo. (I don't know what happened; I was sleeping. Gerund.)

Los niños de ahora duermen menos que los de hace veinte años. (Today's children sleep less than those of 20 years ago. Present indicative.)

Se durmieron mientras tomaban el sol. (They fell asleep while sunbathing. Preterite.)

Espero que duermas bien, mi amor, y que pienses en mí también. (I hope that you sleep well, my love, and that you think about me too. Present subjunctive.)

Me recomendó que no durmiera en el suelo. (She recommended that I don't sleep on the floor. Imperfect subjunctive.)

¡Duérmete ahorita! (Go to sleep right now! Imperative.)