Translation guide
Describes reckless boldness that ignores danger or consequences. In Japanese, this is often expressed through adjectives, verbs, or set phrases that emphasize thoughtlessness, rashness, or suicidal risk.
Describing a person or action that is imprudently brave, ignoring obvious risks.
The most direct and common adjective/noun for 'foolhardy' or 'reckless'. Can describe plans, actions, or people.
His foolhardy driving caused an accident.
It was a foolhardy challenge.
Literally 'not seeing the other side', meaning rash or foolhardy. Often used for a person's character.
The foolhardy youths jumped off the cliff.
Literally 'not knowing life', meaning foolhardy or daredevil. Emphasizes disregard for one's own life.
The foolhardy adventurer set sail in the storm.
Reckless, foolhardy, often used for impulsive actions without thinking. Slightly old-fashioned.
The foolhardy plan ended in failure.
Emphasizing that the action is so risky it could lead to death or ruin.
Literally 'suicidal act'. Used to describe foolhardy actions that are almost certain to end badly.
Setting sail in such a storm is foolhardy.
Colloquial phrase meaning 'it's like going to your death'. Strongly emphasizes the foolhardy nature.
Focusing on lack of forethought rather than physical danger.
無謀 is the most general and neutral term for 'foolhardy'. 向こう見ず implies a personality trait of not considering consequences, often used for young or hot-headed people. 命知らず specifically highlights disregard for one's own life, and can sometimes carry a nuance of admiration for daredevils.
English 'foolhardy' combines 'fool' and 'hardy', but Japanese does not have a direct compound equivalent. Using 愚か (foolish) + 大胆 (bold) would sound unnatural. Stick to the adjectives and phrases above.
Climbing a winter mountain without preparation is foolhardy.
早まって辞表を出すな。
Don't be foolhardy and hand in your resignation.