no sé
verbCEFR A1
What does “no sé” mean in English?
I don't know
Example sentences
—¿Cuántos años tiene ella? —No sé.
—How old is she? —I don't know.
No sé la respuesta.
I don't know the answer.
No sé qué decir.
I don't know what to say.
How to use it
No sé means 'I don't know' (a fact / piece of information). From saber (to know facts/skills). The accent on sé distinguishes it from se (reflexive pronoun).
Common mistake
Always write the accent on sé (1sg of saber). Without it, se is the reflexive pronoun — completely different word.