思(おも)い違(ちが)い

おもいちがい
noun
misconception; mistaken belief
1. misconception; mistaken idea
having the wrong understanding or belief about something
それは思(おも)い違(ちが)いだ。
That's a misconception.
思(おも)い違(ちが)いをしていた。
I had the wrong idea.
私(わたし)の思(おも)い違(ちが)いでなければ、会議(かいぎ)は来週(らいしゅう)のはずだ。
Unless I'm mistaken, the meeting should be next week.

COMPOUND STRUCTURE:
思(おも)い違(ちが)い combines 思(おも)う (to think) + 違(ちが)い (difference/mistake). Note: uses 違(ちが)い, not 間違(まちが)い.

NUANCE:
思(おも)い違(ちが)い implies having believed something that turned out to be incorrect - a cognitive misunderstanding rather than a perceptual error.

COMMON EXPRESSIONS:

  • 思(おも)い違(ちが)いをする - to have a misconception
  • 思(おも)い違(ちが)いでなければ - if I'm not mistaken
  • 大(おお)きな思(おも)い違(ちが)い - a big misconception

RELATED WORDS:

  • 勘違(かんちが)い - misunderstanding (more common)
  • 記憶違(きおくちが)い - faulty memory
  • 誤解(ごかい) - misunderstanding

COMPARISON:
思(おも)い違(ちが)い is more about incorrect beliefs or assumptions, while 勘違(かんちが)い often involves misinterpreting a situation.

general
Added 2026.1.27 20:47
08500/08583_omoichigai