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

5 days ago · Silly describes something that can't be taken seriously. You might not mind telling silly jokes, but you don't want to be told a project you've worked hard at is silly. Silly originally …

Nov 29, 2025 · Silly is usually taken to imply a less serious degree of foolishness, mental impairment, or hilarity than its synonyms. The sense meaning stupefied is usually restricted to …

If you say that someone or something is silly, you mean that they are foolish, childish, or ridiculous. My best friend tells me that I am silly to be upset about this. You silly boy; why did …

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 …

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

Definition of silly adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

sil•ly (sil′ ē), adj., -li•er, -li•est, n., pl. -lies. stupid or foolish: a silly writer. irrational: a silly idea. dazed: He knocked me silly. [Cricket.](of a fielder or the fielder's playing position) extremely …

SILLY meaning: 1 : having or showing a lack of thought, understanding, or good judgment foolish or stupid; 2 : not practical or sensible