思い違い|おもいちがいomoichigai[0]heiban (flat)

1. noun, suru verb, intransitive verbmisunderstanding; misapprehension; misconception; false impression; wrong idea
   彼かれは思い違おもいちがいをしているらしい。↗

   It appears that he is mistaken.

• Synonym誤解ごかいNeutralMisunderstanding what someone else says or does, as in 「誤解を招く」. 「思い違い」 is about your own mistaken belief — thinking something is true when it is not.
• Synonym勘違いかんちがいNeutralGetting the wrong idea; the most common word for this in everyday speech. Very close to 「思い違い」.
• Synonym誤認ごにんWrittenWritten/formal term for mistaking one thing for another, as in 「誤認逮捕」; leans legal.
• Synonym取り違えるとりちがえるNeutralVerb for taking one thing for another — picking up the wrong item or misunderstanding it.
• Synonym間違うまちがうCasualTo be wrong or make a mistake; mostly intransitive but also transitive, as in 「人を間違う」. Leans colloquial.
• Synonym考え違いかんがえちがいNeutralA mistaken idea, stressing an error in thinking or judgment. Very close to 「思い違い」, which also covers misremembering.
• Related間違いまちがいNeutralThe broadest word for a mistake or error of any kind. 「思い違い」 is limited to a wrong idea held in the mind.
• Related間違えるまちがえるNeutralVerb for getting something wrong, as in 「道を間違える」; stresses the act of erring rather than the wrong idea itself.
• Related取り違えとりちがえNeutralMixing up two things or taking the wrong one; the stress is on the mix-up itself, not on a mistaken belief.
• Related誤認識ごにんしきWrittenWritten/formal term for a mistaken recognition or understanding; leans technical.
• Antonym理解りかいNeutralAntonym: understanding something correctly, the opposite of holding a mistaken belief.

For a mistaken belief or false impression, 「思い違い」 fits, as in 「私の思い違いでした」. In everyday speech 「勘違い」 is the usual choice. Use 「誤解」 for misunderstanding someone else, 「取り違え」 for taking the wrong thing, and 「理解」 for correct understanding.

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

1. 事実じじつと異ことなることを真実しんじつだと考かんがえてしまうこと。