Avoid 'i' between vowels

For verbs ending in -uir like this one, when the 'i' is between two vowels, it changes into a 'y'. This happens in the present tense (except for nosotros/vosotros) and some past forms.

The 'Y' Substitution

In the past tense (preterite), the 'he/she' and 'they' forms use a 'y' instead of an 'i' (constituyó/constituyeron). This helps keep the sound smooth.

Spelling Change in the Past

Instead of using 'ser' (to be) or 'formar' (to form), use 'constituir' in essays or business reports to sound more professional.

A Formal Upgrade

Common in formal writing, news, and academic contexts to describe how things are made up.

Don't confuse with 'construir'

You will often see 'se constituyó' (it was established). This is a common way to say something was founded without naming the person who did it.

Using it Reflexively

If you are talking about the paperwork for a new business in Spain or Latin America, 'constituir' is the correct verb to use for the official registration process.

Legal Language

Frequently used in legal, business, and governmental contexts.

Learn how to use 'constituir' in Spanish. Includes full conjugation tables, formal vs. neutral usage, common mistakes, and real-world examples.

Constituir: Meaning, Conjugation, and Usage in Spanish

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Verb conjugation is the backbone of Spanish communication. Every sentence you speak or write requires at least one conjugated verb, and getting it right determines whether you sound fluent or confused.

The good news: Spanish has clear patterns. Regular -ar, -er, and -ir verbs follow predictable rules, and the 20 most common irregular verbs cover the vast majority of everyday conversation. Master those, and you''re already ahead of most learners.

Past, present, future, hypothetical — conjugations let you place actions exactly when they happened or might happen.

Wrong conjugations can change who did what. ''Hablé'' (I spoke) vs ''habló'' (he spoke) — one accent mark, completely different meaning.

DELE, AP Spanish, and university placement tests all heavily test conjugation accuracy. It''s the most testable skill in Spanish.

When conjugation becomes automatic, you stop translating in your head and start thinking directly in Spanish. That''s true fluency.

Spanish has 14 major verb tenses across 3 moods (indicative, subjunctive, imperative), but just 3 tenses — present, preterite, and imperfect — account for over 80% of verbs used in everyday speech. Focus there first.

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The conditional of constituir is regular: constituiría, constituirías, constituiría, constituiríamos, constituiríais, constituirían.

The future of constituir is regular: constituiré, constituirás, constituirá, constituiremos, constituiréis, constituirán.

Use 'constituye' (tú) or 'constituya' (usted) to give formal orders to form or establish something.

Constituir is regular in the imperfect: constituía, constituías, constituía, constituíamos, constituíais, constituían.

The imperfect subjunctive is based on the preterite 'ellos' form: constituyera, constituyeras, constituyera, constituyéramos, constituyerais, constituyeran.

The negative imperative always uses the present subjunctive: no constituyas, no constituya, no constituyamos, no constituyáis, no constituyan.

Constituir changes the 'u' to 'uy' in all forms except nosotros and vosotros: constituyo, constituyes, constituye, constituyen.

The present subjunctive follows the 'yo' form of the present: constituya, constituyas, constituya, constituyamos, constituyáis, constituyan.

In the preterite, constituir uses a 'y' in the third-person forms: constituyó and constituyeron.

constituir

Complete Conjugation Tables

🔄 Conjugations

subjunctive

present

imperfect

imperative

affirmative

negative

indicative

present

preterite

future

imperfect

conditional

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