Translation guide
The quality of being recklessly bold or rash, often without considering the consequences. In Japanese, this concept is expressed through nouns, adjectives, and idiomatic phrases that emphasize thoughtless courage or dangerous overconfidence.
Describing the trait of acting boldly without regard for danger or consequences.
The most direct and common noun for 'foolhardiness' or 'recklessness'. Often used in phrases like 無謀な挑戦 (a reckless challenge).
His foolhardy driving caused an accident.
A slightly colloquial noun/adjective meaning 'reckless' or 'daredevil'. Implies a lack of caution, often used for people or actions.
That young man is foolhardy and always takes on dangerous challenges.
Literary term for 'foolhardy courage' or 'reckless bravery'. Often used in formal or written contexts to criticize thoughtless valor.
It is foolish to charge into the enemy camp with foolhardy courage.
Focusing on the lack of forethought or consideration of danger.
An adverbial phrase meaning 'without thinking of the consequences'. Used to describe actions done impulsively and recklessly.
He invested all his money without thinking of the consequences.
An adjective meaning 'foolhardy' or 'reckless', literally 'not seeing the other side'. Emphasizes blindness to danger.
Describing a state of being overly confident leading to carelessness.
無謀 is the standard word for 'recklessness' and can be used in formal contexts. 無鉄砲 is more colloquial and often describes a person's character as 'daredevil' or 'foolhardy' in a slightly less severe tone.
There is no single Japanese word that perfectly matches 'foolhardiness' in all contexts. Using 愚かさ (foolishness) alone misses the 'boldness' aspect. Instead, use the options above depending on the nuance.
You should stop such foolhardy behavior.
A four-character idiom meaning 'rushing recklessly forward'. Often used to describe someone who charges ahead without caution.
His foolhardy, headstrong nature caused the project to fail.