The Future Tense of Suponer is used to express what you will suppose or will assume, for example, Supondré que ya has comido. (I will assume that you have already eaten.)

Suponer is a stem-changing verb, meaning the last vowel in its stem changes from e to d in certain conjugations. This pattern is common among Spanish verbs and must be memorized.

Conjugations

Conjugations of Suponer (to suppose) in the Future Tense tense (Castilian Spanish):

Suponer generally means to assume or suppose something, but has several different meanings in the Future Tense, some of which might surprise you.

To assume or suppose: For example, Supondré que ya has terminado tu tarea. (I will assume that you have already finished your homework.)

To imply or suggest: For example, Este resultado supondrá un gran cambio para la empresa. (This result will imply a big change for the company.)

To consider or believe: For example, No supondré que eres culpable hasta que se demuestre. (I will not consider you guilty until it is proven.)

To require or demand (colloquial): For example, Supongo que me traerás la cena a la cama, ¿no? (I suppose you’ll bring me dinner in bed, won’t you?)

To imagine or hypothesize: For example, Supongamos que ganas la lotería, ¿qué harías? (Let’s suppose you win the lottery, what would you do?)

Examples

Examples of Suponer in the Future Tense

Si no llueve, supondré que podemos ir de picnic el sábado. (If it doesn’t rain, I will assume we can go on a picnic on Saturday.)

Cuando llegues a la fiesta, supondrás que ya estamos allí. (When you arrive at the party, you will assume we are already there.)

Ella supondrá que olvidaste su cumpleaños si no le envías un mensaje. (She will assume you forgot her birthday if you don’t send her a message.)

Mis amigos y yo supondremos que no vienes si no respondes el mensaje de texto. (My friends and I will assume you’re not coming if you don’t respond to the text message.)

Ustedes supondrán que el concierto está cancelado si no ven las entradas a la venta. (You all will assume the concert is canceled if you don’t see tickets on sale.)

Ellos supondrán que no quieres ir al cine con nosotros si no confirmas. (They will assume you don’t want to go to the movies with us if you don’t confirm.)

Cuando veas las maletas empacadas, supondrás que nos vamos de vacaciones. (When you see the packed suitcases, you will assume we are going on vacation.)

Si no contesto el teléfono, supondrán que estoy ocupado. (If I don’t answer the phone, they will assume I’m busy.)

Cuando vean que no hay nadie en casa, supondrán que salimos. (When they see there’s no one at home, they will assume we went out.)

Si ven que no estudio, mis padres supondrán que no me importan mis calificaciones. (If they see I’m not studying, my parents will assume I don’t care about my grades.)

Cuando veas la cena servida, supondrás que es hora de comer. (When you see dinner is served, you will assume it’s time to eat.)

Si no llego a tiempo, mi jefe supondrá que no me importa el trabajo. (If I don’t arrive on time, my boss will assume I don’t care about the job.)

Cuando vean que no hay luces encendidas, supondrán que no hay nadie en casa. (When they see there are no lights on, they will assume no one is home.)

Si no respondo tus mensajes, supondrás que estoy enojado contigo. (If I don’t respond to your messages, you will assume I’m mad at you.)

Cuando vean que no hay comida en la nevera, supondrán que tenemos que ir de compras. (When they see there’s no food in the fridge, they will assume we need to go grocery shopping.)

Conjugations with English Translations

Conjugations of Suponer (to suppose) in the Future Tense tense (Castilian Spanish) with English Translations:

This post covers Castilian Spanish. For Latin American Spanish, click here

Synonyms

The Future tense is also known as the Simple Future, Future Simple, Future Tense, Future Indicative, or Will Future in English, and as Futuro Simple, Futuro Imperfecto, Tiempo Futuro, Futuro de Indicativo, or Indicativo Futuro in Spanish.