The meaning of SILLY is exhibiting or indicative of a lack of common sense or sound judgment. How to use silly in a sentence. Synonym Discussion of Silly.

/ ˈsɪl·i / Add to word list showing a lack of thought or judgment; not serious and not showing much intelligence: a silly grin

SILLY definition: weak-minded or lacking good sense; stupid or foolish. See examples of silly used in a sentence.

I like a man who can be silly without being immature. He made a silly face. He has a silly sense of humor.

/ ˈsɪl·i / Add to word list showing a lack of thought or judgment; not serious and not showing much intelligence: a silly grin

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Mar 17, 2026 · Adjective silly (comparative sillier, superlative silliest) Laughable or amusing through foolishness or a foolish appearance. They were laughing at a silly joke. silly grin

Having or exhibiting a lack of good judgment or common sense; foolish. See Synonyms at foolish. 2. Lacking seriousness or responsibleness; frivolous: indulged in silly word play; silly pet names for …

Silly definition: Having or exhibiting a lack of good judgment or common sense; foolish.

Collins Concise English Dictionary © HarperCollins Publishers:: silly /ˈsɪlɪ/ adj ( -lier, -liest) lacking in good sense; absurd frivolous, trivial, or superficial dazed, as from a blow n (modifier) (of a fielding …