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foolish

foolish /ˈfuːlɪʃ/ adjective
foolish
/ˈfuːlɪʃ/
adjective
Britannica Dictionary definition of FOOLISH
[more foolish; most foolish]
: having or showing a lack of good sense or judgment : stupid, silly

— foolishly

adverb

— foolishness

noun [noncount]