Coser means 'to sew', and it is a regular -er verb tied to crafts and practical tasks. Cose un botón (sew on a button), mi abuela sabe coser (my grandmother knows how to sew). Because hobbies and practical skills come up in free-time topics, coser is a useful, if specialised, verb. Take care not to confuse it with cocer ('to boil / cook'), which sounds similar — a classic spelling and pronunciation trap. As a regular -er verb the conjugation is predictable, and the idiom ser coser y cantar ('to be a piece of cake') is a fun expression to know.
Quick facts
Coser (to sew) is a regular -er verb.
Real sentences across different tenses — the kind of thing you'd actually say or write.
Cose un botón (sew on a button).
Sabe coser (she knows how to sew).
Coser (sew) vs cocer (boil/cook).
Ser coser y cantar (to be a piece of cake).
Fixed expressions worth knowing — they come up in listening, reading and writing tasks.
Idiomatic expressions
Coser 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.
coser is a regular -er verb — it follows the standard -er pattern in every tense. That makes it a good one to drill: if you know coser, you know the template for all regular -er 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 coser now →Three questions. Press Enter to check each answer.
yo: coso, tú: coses, él: cose, nosotros: cosemos, vosotros: coséis, ellos: cosen
Coser is a regular -er verb following the standard -er pattern.
Use coser in multiple tenses to show range — present, preterite and future at minimum. This is a key criterion for higher GCSE marks.
Verbs that are easy to confuse with coser or that behave like it.
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. Coser 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.