What does foolhardy mean?
"Foolhardy" is an adjective describing behavior that is boldly risky in a way that defies good sense. A foolhardy person charges into danger not out of calculated bravery but out of a failure to appreciate it — the word implies recklessness rather than courage. Calling an expedition, investment, or decision foolhardy is inherently critical: it suggests the risks were obvious and ignored. The term dates from the late Middle Ages, formed by combining "fool," meaning a senseless or unwise person, with "hardy," meaning bold or daring; the fusion captures exactly what makes the trait dangerous, courage without wisdom. In everyday usage it pairs naturally with words like reckless, rash, and imprudent, while its opposites are prudence and caution. It is a useful word precisely because it distinguishes admirable daring from foolish bravado — a distinction worth making whenever courage is on display.
adjectiveRecklessly bold or daring without regard for danger or sensible caution; rashly adventurous.
- (of a person or action) Recklessly bold or daring, proceeding despite obvious risk and without sensible judgment.
"It would be foolhardy to attempt the summit without checking the weather forecast."
"Climbing the frozen waterfall with no ropes was a foolhardy stunt that nearly cost him his life."
"The board dismissed her proposal as foolhardy, arguing that launching without market research bordered on gambling."
It literally began as "fool-hardy": medieval English fused the words for a simpleton and a daredevil into one warning label that has stuck around for over 600 years.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of foolhardy
The word derives from Middle English, combining "fool" — from Old French "fol," itself from Latin "follis," meaning bellows or windbag — with "hardy," from Old French "hardi," meaning bold or daring. Attested from around the fourteenth century, it originally appeared as "fool-hardy," literally a fool who is hardy, or daring beyond his wits. Its cousins "hardy" and "hardihood" share the Old French root, preserving the vocabulary of medieval daring.
Related word forms
How foolhardy is actually used
The word carries a distinctly disapproving connotation: it praises neither the courage nor the skill of the actor but condemns the absence of judgment. It is stronger than simply describing someone as brave, and it is used in both formal criticism and everyday speech.
Easily confused with foolhardy
"Hardy" means robust, resilient, or capable of enduring tough conditions, while "foolhardy" means recklessly bold in a way that ignores real danger.