不心得|ふこころえfukokoroe[2]nakadaka (mid-high)

1. noun, na-adjectiveindiscretion; imprudence; rudeness; misbehavior; misconduct; misdeed; immorality

• Synonym軽率けいそつWrittenWritten register. Focuses on hasty action taken without thinking; unlike 「不心得」 it carries no sense of bad character or misconduct.
• Synonym軽はずみかるはずみCasualColloquial. Covers offhand words and acts done without thinking; more casual than 「不心得」, which implies faulty conduct or character.
• Synonym軽々しいかるがるしいCasualColloquial. An adjective for speech and acts made without care; 「不心得」 is a noun for the faulty attitude or conduct itself.
• Related不謹慎ふきんしんWrittenWritten. Points to jokes or levity out of place for the occasion; 「不心得」 is broader bad conduct, not just poor taste in a situation.
• Related無分別むふんべつWrittenWritten. Stresses lacking judgement, so one acts wildly without telling right from wrong; 「不心得」 instead points to a bad mindset.
• Related軽忽きょうこつWrittenWritten and rare. Suggests rashness or something absurd, laughable; 「不心得」 condemns improper conduct rather than ridiculing it.
• Related無思慮むしりょWrittenWritten and rare. Simply means too little thought behind an act; 「不心得」 adds the nuance of improper attitude or behavior.
• Antonym心得こころえNeutralNeutral. Means the rules one should know and follow; the direct opposite of 「不心得」, which denotes a wrong mindset or bad conduct.
• Antonym分別ふんべつWrittenWritten. Good sense that tells right from wrong; the antonym of 「不心得」 in the sense of acting without proper judgement.

Use 「不心得」 for a wrong mindset, bad conduct, or improper intentions; it often appears in admonition, as in 「不心得者」 or 「不心得を戒める」. For acting without thinking, say 「軽率」; for levity out of place on an occasion, 「不謹慎」. The opposite is 「分別」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 心掛こころがけが悪わるいこと。