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English definition of “silly”

silly

adjective  /ˈsɪl·i/ us  
showing a lack of thought or judgment; not serious and not showing much intelligence: a silly grin I watched another silly movie last night.
silliness
noun [U]  /ˈsɪl·i·nəs/ us  
It’s time to stop the silliness and get serious.
(Definition of silly from the Cambridge Academic Content Dictionary © Cambridge University Press)
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