Translation guide
Describes someone who acts without considering others or the consequences. Japanese offers several nuanced terms depending on whether the lack of thought is due to carelessness, insensitivity, or simple absent-mindedness.
Someone who acts without thinking about how their actions affect others, often causing trouble or hurt feelings.
Saying something like that, you're really thoughtless.
Means 'person without consideration/compassion'. Emphasizes lack of empathy or thoughtfulness toward others.
彼女は思いやりのない人だ。
She is a thoughtless person.
Refers to someone who lacks consideration or care, often in social or professional contexts. Slightly more formal.
彼は配慮のない人で、周りを困らせる。
He is a thoughtless person who causes trouble for those around him.
Someone who forgets things, makes careless mistakes, or acts without thinking due to lack of attention.
A person who is careless, forgetful, or prone to making silly mistakes. Often used affectionately or for minor thoughtlessness.
彼はうっかり者で、よく鍵を忘れる。
He's a thoughtless person who often forgets his keys.
Describes a hasty, careless person who acts without thinking and makes mistakes. Similar to 'うっかり者' but implies more rashness.
そそっかしい人だから、またミスをした。
Because he's a thoughtless person, he made another mistake.
Someone who acts impulsively without considering the consequences, often in a dangerous or foolish way.
Means 'rash person'. Used for someone who acts without due consideration, often leading to negative outcomes.
軽率な人は失敗しやすい。
Thoughtless people tend to fail.
Literally 'person who doesn't see what's ahead'. Implies reckless daring, often without thinking of danger. Stronger than 軽率.
彼は向こう見ずな人で、危険を顧みない。
He is a thoughtless person who disregards danger.