Spanish vocabulary · Intermediate

Assume in Spanish: Suponer

Suponer · verb · soo-poh-NEHR

The most common translation of 'assume' in Spanish is 'suponer,' meaning to suppose or presume something to be true without proof. The word 'asumir' also exists in Spanish but specifically means to take on a responsibility or accept a situation, not to make a supposition. This distinction is a frequent source of confusion for English speakers.

soo-poh-NEHR

Supongo que llegarán tarde porque siempre hay mucho tráfico a esta hora.

I assume they'll arrive late because there's always a lot of traffic at this time.

Assume in Spanish: Quick Reference

Below are the most common Spanish words for assume, with pronunciation and regional usage notes.

SpanishEnglishPronunciationRegion / Register
suponerassumesoo-poh-NEHRDefault, widely understood
asumirassumeto take on a role or responsibility
dar por sentadoassumeto take for granted

How Native Speakers Use Suponer

Real example sentences across three contexts you'll actually run into.

Making a supposition

Supongo que el restaurante estará lleno porque es viernes por la noche.

I assume the restaurant will be full because it's Friday night.

Suponer conjugates irregularly: supongo, supones, supone, suponemos, suponen.

Taking on responsibility

La nueva directora asumió el cargo con entusiasmo y determinación.

The new director assumed the position with enthusiasm and determination.

Asumir is correct when taking on roles, duties, or consequences.

Taking for granted

No des por sentado que todos hablan inglés cuando viajas por Sudamérica.

Don't assume that everyone speaks English when you travel through South America.

Dar por sentado captures the assumption of something being obvious.

Avoid These Mistakes When Using Suponer

False cognate misuse

Incorrect: Asumí que ibas a venir a la fiesta de cumpleaños.

Correct: Supuse que ibas a venir a la fiesta de cumpleaños.

Asumir means to accept or take on, not to suppose; when guessing or presuming, suponer is the correct verb choice.

Irregular conjugation missed

Incorrect: Yo supono que ella tiene razón.

Correct: Yo supongo que ella tiene razón.

Suponer is conjugated like poner, with an irregular first-person present form: supongo, not supono.

Lock in Assume Vocabulary with the Parrot Method

Why word lists alone don't stick

Memorizing a translation feels productive, but most learners forget 70% of what they studied within 48 hours. Vocabulary needs spaced repetition AND real-world exposure to transfer to long-term memory.

See Suponer used by native speakers

Parrot's short-form videos feature native speakers using suponer in real situations. Context-based exposure beats flashcards, you hear Supongo que llegarán tarde porque siempre hay mucho tráfico a esta hora. while watching someone live the moment, connecting meaning, sound, and rhythm at once.

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Common Questions About Assume in Spanish

Is asumir a false cognate of assume?
Asumir is a partial false cognate—it overlaps with one meaning of 'assume' (to take on a role) but does not cover the most common English sense of supposing something. Many learners mistakenly use asumir when they should use suponer, which is specifically for making assumptions or guesses.
How do you conjugate suponer?
Suponer follows the same irregular pattern as poner: present tense is supongo, supones, supone, suponemos, suponen; the preterite is supuse, supusiste, supuso. Knowing poner's conjugation gives you suponer's forms automatically by adding the prefix 'su-.'
What does 'dar por sentado' mean exactly?
Dar por sentado translates literally as 'to give as seated' but idiomatically means 'to take for granted' or 'to assume without question.' It implies an unexamined assumption, often with a cautionary tone suggesting the speaker should have verified rather than presumed.