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
Unir (to unite) is a regular -ir verb.
Real sentences across different tenses — the kind of thing you'd actually say or write.
Une los cables (join the cables).
El deporte une a la gente (sport unites people).
Unirse a: me uní al club (I joined the club).
La unión, unido.
Fixed expressions worth knowing — they come up in listening, reading and writing tasks.
Idiomatic expressions
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.
Type conjugations from memory and get instant feedback. That's how you actually build the automatic recall the exam needs — not from reading tables.
Practice unir now →Three questions, no account needed. Type the form, then press Enter or tap Check.
yo: uno, tú: unes, él: une, nosotros: unimos, vosotros: unís, ellos: unen
The past participle is unido (he unido) and the gerund is uniendo (estoy uniendo).
Unir is on the AQA and Eduqas GCSE Spanish vocabulary lists, but not on Edexcel.
Verbs that are easy to confuse with unir or that behave like it.
Unir is on the AQA and Eduqas GCSE Spanish vocabulary lists, but not on Edexcel. Compare the exam boards.
Written by Daniel Holmes for GCSE & A-Level Spanish students.