Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “foolish”

foolish

adjective     /ˈfuː.lɪʃ/
B2 unwise , stupid , or not showing good judgment : That was a rather foolish thing to do. She was afraid that she would look foolish if she refused . It was foolish of them to pay so much.Stupid and sillyOf unsound mind foolishly     /-li/ adverb B2 Foolishly, I didn't write the phone number down.Stupid and sillyOf unsound mind foolishness     /-nəs/ noun [U] Stupid and silly behaviour
(Definition of foolish adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of foolish

Definitions of “foolish” in other dictionaries

Word of the Day

chef

a skilled and trained cook who works in a hotel or restaurant, especially the most important cook

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More