no-no

noun
\ ˈnō-ˌnō How to pronounce no-no (audio) \
plural no-no's or no-nos

Definition of no-no

1 : something unacceptable or forbidden

First Known Use of no-no

circa 1942, in the meaning defined at sense 1

Keep scrolling for more

Learn More about no-no

Time Traveler for no-no

Time Traveler

The first known use of no-no was circa 1942

See more words from the same year

Statistics for no-no

Cite this Entry

“No-no.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/no-no. Accessed 19 Feb. 2020.

Keep scrolling for more

More Definitions for no-no

no-no

noun
How to pronounce no-no (audio)

English Language Learners Definition of no-no

informal
: something that people are not supposed to do because it is not proper, safe, fashionable, etc.

More from Merriam-Webster on no-no

Rhyming Dictionary: Words that rhyme with no-no

Comments on no-no

What made you want to look up no-no? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

See Definitions and Examples »

Get Word of the Day daily email!

Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!