folly

/ˈfɑɫi/

lack of good sense; foolishness

folly in a sentence

“Ignoring the warnings proved to be sheer folly.”

Old French folie madness, foolishness from fol fool from Latin follis bellows, windbag

Related Words

ignoramus

an ignorant or stupid person

luddite

a person opposed to new technology or ways of working

obtuse

annoyingly insensitive or slow to understand

naive

showing lack of experience or judgment

gullible

easily persuaded to believe something

credulous

having too great a readiness to believe things