Definition, Meaning & Synonyms

no-no

noun
/ˈnoʊˌnoʊ/
Definition
A prohibitive or unacceptable action or situation.
Examples
  • Wearing white after Labor Day is considered a no-no in some fashion circles.
  • Cheating on an exam is a major no-no in any educational setting.
  • Eating someone else’s lunch from the office fridge without asking is a definite no-no.
Meaning
Something that is not allowed or is strongly discouraged.
Synonyms
  • taboo
  • prohibition
  • mistake