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 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 meant “happy,” which …

Dec 25, 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 times when silly is …

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 …

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 …

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

Definition of silly. English dictionary and integrated thesaurus for learners, writers, teachers, and students with advanced, intermediate, and beginner levels.

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 you tramp about so …

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