no lo sé
verbCEFR A1
What does “no lo sé” mean in English?
I don't know
I don't know (it)
Example sentences
—¿Dónde está el profesor? —No lo sé.
—Where is the teacher? —I don't know.
—¿Es difícil? —No lo sé.
—Is it hard? —I don't know.
No lo sabemos.
We don't know it.
How to use it
No lo sé means 'I don't know it' — adds the direct object pronoun lo to refer back to something just mentioned. Pronoun goes before the conjugated verb.
Common mistake
Lo goes BEFORE the conjugated verb: 'no LO sé', not 'no sé lo' or 'no sé it'. Object pronouns precede in Spanish (with infinitives/imperatives the rule changes).