English dictionary

folly

/'f/A/l/i/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

the trait of acting stupidly or rashly

noun.attribute

Synonyms foolishness unwiseness

Antonyms wisdom wiseness

Source: WordNet 3.0
a stupid mistake

noun.act

Synonyms betise foolishness imbecility stupidity

Source: WordNet 3.0
the quality of being rash and foolish

noun.cognition

Examples
Trying to drive through a blizzard is the height of folly.

Synonyms craziness foolishness madness

Source: WordNet 3.0
foolish or senseless behavior

noun.act

Synonyms craziness foolery indulgence lunacy tomfoolery

Source: WordNet 3.0
The state of being foolish; want of good sense; levity, weakness, or derangement of mind.

noun

Source: webster1913