Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “silly”

silly

adjective uk   /ˈsɪl.i/ us  
B1 showing little thought or judgment: Don't do that, you silly boy! a silly mistake It was silly of you to go out in the sun without a hat.Stupid and sillyOf unsound mind embarrassed; afraid that people will laugh at you : I feel silly in this dress.
Synonym
B1 not important, serious, or practical: She gets upset over such silly things. We were served our drinks in these silly little glasses.
(Definition of silly from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of silly?
Add Cambridge dictionaries to your browser to your website

Definitions of “silly” in other dictionaries

Word of the Day

sling

to throw or drop something carelessly

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