The meaning of silly is exhibiting or indicative of a lack of common sense or sound judgment. Silly describes something that can't be taken seriously. Having or exhibiting a lack of good judgment or common sense;
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How to use silly in a sentence. Silly is usually taken to imply a less serious degree of foolishness, mental impairment, or hilarity than its synonyms. You might not mind telling silly jokes, but you don't want to be told a project you've worked.
Afraid that people will laugh at you:
Showing little thought or judgment: