Quién sabe means "Who knows" in Spanish. In Mexico it's a very common way to say "no idea", and sometimes a polite way to avoid a direct answer.
Neutral Fine in most everyday situations.
How It's Used
Tone & Context
Mexicans often avoid a flat "no" or "I don't know". "Quién sabe" softens it.
With a shrug it can also mean "probably not".
Related Expressions
This is the kind of Spanish traditional apps skip. PalabraFlow teaches phrases like “Quién sabe” inside 40 real-life situations, with audio from Mexican voices and a pronunciation score when you say them out loud (3 free scores a day, 10 with Plus).
Want to practice out loud? Fluency adds an AI conversation partner with a Mexican voice: you talk, it talks back like a local and scores every sentence.
Not sure where to start? Take the 1-minute quiz for a personal plan and 7 days of Plus free.
FAQ: Quién sabe
Quién sabe means "Who knows" in Spanish. In Mexico it's a very common way to say "no idea", and sometimes a polite way to avoid a direct answer.
Yes, on "quién", because it's a question word.
No. It's a common, neutral reply.