vs
QUICK ANSWER
"No sé" is a phrase which is often translated as "I don't know", and "¡Bah!" is an interjection which is often translated as "Bah!". Learn more about the difference between "no sé" and "¡Bah!" below.
Copyright © 2026 Dictionary Media Group, Inc.
¡Bah!(
bah
)An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).