IPA: //ˈfuːlˌhɑːrdi//
KK: /ˈfuːlˌhɑːrdi/
Someone who is recklessly bold or takes unnecessary risks without thinking about the consequences.
His foolhardy decision to climb the mountain without proper gear put him in danger.
Foolhardy → It is formed from "fool" (from Old English *fola*, meaning a person lacking sense) and "hardy" (from Old French *hardi*, meaning bold or brave). The word describes someone who is boldly foolish or recklessly daring.
Think of someone who is 'bold' ('hardy') but also 'lacking sense' ('fool') — that's why foolhardy means being recklessly daring.
No commonly confused words.