Regular -IR verb

unir
to unite

Unir is a regular -ir verb in Spanish.

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Unir conjugation in Spanish

Unir means 'to join', 'to unite' or 'to connect', and it is a regular -ir verb used in both literal and figurative senses. Une los dos cables (join the two cables), el deporte une a la gente (sport brings people together). The reflexive unirse a means 'to join' a group: me uní al club (I joined the club). Because joining things and people together features across social, sport and society topics, unir is a useful verb. As a regular -ir verb the conjugation is predictable, and the related words la unión ('union') and unido ('united') are easy to learn with it.

Quick facts

Meaningto unite
Verb type-ir verb
Regular / IrregularRegular
CEFR levelB1

Unir — conjugation tables

Unir (to unite) is a regular -ir verb.

Indicative
Presente guide →
youno
unes
élune
nosunimos
vosunís
ellosunen
Pretérito Indefinido guide →
youní
uniste
élunió
nosunimos
vosunisteis
ellosunieron
Pretérito Imperfecto guide →
younía
unías
élunía
nosuníamos
vosuníais
ellosunían
Futuro guide →
youniré
unirás
élunirá
nosuniremos
vosuniréis
ellosunirán
Condicional guide →
youniría
unirías
éluniría
nosuniríamos
vosuniríais
ellosunirían
Pretérito Perfecto guide →
yohe unido
has unido
élha unido
noshemos unido
voshabéis unido
elloshan unido
Pluscuamperfecto guide →
yohabía unido
habías unido
élhabía unido
noshabíamos unido
voshabíais unido
elloshabían unido
Futuro Compuesto guide →
yohabré unido
habrás unido
élhabrá unido
noshabremos unido
voshabréis unido
elloshabrán unido
Presente Progresivo guide →
yoestoy uniendo
estás uniendo
élestá uniendo
nosestamos uniendo
vosestáis uniendo
ellosestán uniendo
Subjunctive
Pres. Subjuntivo guide →
youna
unas
éluna
nosunamos
vosunáis
ellosunan
Imperf. Subjuntivo guide →
youniera
unieras
éluniera
nosuniéramos
vosunierais
ellosunieran
Imperative
Imperativo guide →
yo
une
éluna
nosunamos
vosunid
ellosunan

Example sentences with unir

Real sentences across different tenses — the kind of thing you'd actually say or write.

1.
Unimos las piezas del rompecabezas.
We joined the puzzle pieces together.
2.
La música une a la gente.
Music brings people together.
3.
Se unieron al club de debate.
They joined the debate club.
4.
Unimos fuerzas para el proyecto.
We joined forces for the project.
5.
Unió las dos partes con pegamento.
He joined the two parts with glue.
6.
El puente une las dos orillas.
The bridge links the two banks.
7.
¿Te unes a nuestro grupo?
Are you joining our group?
8.
Unimos las cuerdas para que fuera más larga.
We tied the ropes together to make it longer.
9.
Se unió a la conversación.
She joined the conversation.
10.
Lo que nos une es más fuerte.
What unites us is stronger.

How to use unir

Joining

Une los cables (join the cables).

Bringing together

El deporte une a la gente (sport unites people).

Joining a group

Unirse a: me uní al club (I joined the club).

Related words

La unión, unido.

Common phrases using unir

Fixed expressions worth knowing — they come up in listening, reading and writing tasks.

unirse ato join
unir fuerzasto join forces
lo que nos unewhat unites us
uniónunion (noun)
unir las piezasto join the pieces

Idiomatic expressions

la uniónunion
unirse ato join
la unión hace la fuerzaunity is strength

Common mistakes with unir

Unir is a regular verb. Make sure you know the endings for each tense — especially the preterite and subjunctive, which is where marks are most often lost.

Grammar notes

unir is a regular -ir verb — it follows the standard -ir pattern in every tense. That makes it a good one to drill: if you know unir, you know the template for all regular -ir verbs.

Practice unir — free

Type conjugations from memory and get instant feedback. That's how you actually build the automatic recall the exam needs — not from reading tables.

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Quick quiz — unir

Three questions. Press Enter to check each answer.

nosotros (Pretérito Indefinido)
ellos / ellas (Presente)
vosotros (Presente)

Frequently asked questions

How do you conjugate unir in the present tense?

yo: uno, tú: unes, él: une, nosotros: unimos, vosotros: unís, ellos: unen

Is unir a regular or irregular verb?

Unir is a regular -ir verb following the standard -ir pattern.

How do you use unir in a GCSE Spanish essay?

Use unir in multiple tenses to show range — present, preterite and future at minimum. This is a key criterion for higher GCSE marks.

Similar verbs to unir

Verbs that are easy to confuse with unir or that behave like it.

juntarto put together — a more everyday 'join'.
conectarto connect — joining things together.
separarto separate — the opposite of uniting.

Related verbs

hablar caminar trabajar escuchar

This reference is written for UK GCSE and A-Level Spanish learners and their teachers. It is designed for exam revision: every form is checked against standard conjugation rules, and the examples reflect the registers and topics that come up in the AQA, Edexcel and Eduqas specifications. Unir is a high-frequency verb and appears often in exam papers. For active recall, use the free practice tool rather than only reading the tables.

Last updated 2 August 2026. Written by Daniel Holmes for GCSE & A-Level Spanish students.