手違い|てちがいtechigai[2]nakadaka (mid-high)

1. nounmistake; blunder; slipup
   この手違てちがいについて説明せつめいを要求ようきゅうします。↗

   I demand an explanation for this mistake.

• Synonym失態しったいWrittenWritten/formal prose. An embarrassing blunder that costs face, as in 「とんだ失態」; 手違い is about procedures or arrangements going wrong.
• Synonym失敗しっぱいNeutralThe most general word for failure, with the broadest range; unlike 手違い it does not stress that a procedure went wrong.
• Synonym間違いまちがいNeutralThe most common everyday word for a mistake; not tied to mix-ups in procedures or arrangements the way 手違い is.
• Synonym過ちあやまちWrittenWritten/formal prose. A fault or wrongdoing, leaning toward moral lapses or unintentional slips.
• Synonym過誤かごFormalFormal. An error or fault, leaning toward legal and medical contexts, as in 「医療過誤」.
• SynonymエラーNeutralLoanword for an error or a system error message; leans toward computers and sports.
• Synonym間違えまちがえNeutralFrom 「間違える」, stressing the act of getting something wrong; in 「それは間違いだ」 it cannot replace 「間違い」.
• Related不成功ふせいこうWrittenWritten/formal prose. Lack of success, an evaluation of the outcome rather than a mix-up in procedure.
• Related粗相そそうCasualColloquial. A careless slip that causes trouble, also a euphemism for wetting or soiling oneself; leans toward minor lapses.
• RelatedしくじりCasualColloquial. Botching something, as in 「とんだしくじり」; leans toward fumbling an attempt.
• RelatedやりそこないCasualColloquial. Bungling what you set out to do, a failed action; 手違い is about procedures or arrangements going awry.
• Related誤作動ごさどうNeutralA machine or device malfunctioning; for equipment glitches, not human mix-ups.
• Related遣り損じやりそんじCasualColloquial. A botched attempt; rarely used and somewhat old-fashioned.

For a plain mistake say 「間違い」, for failure 「失敗」. 「手違い」 is for a mix-up in procedures, arrangements or communication, as in 「こちらの手違いでご迷惑をおかけしました」. Use 「過誤」 for medical errors and 「失態」 for embarrassing blunders; the other words cover narrower shades of error or failure.

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

1. 手順てじゅんや段取だんどりを誤あやまり、うまくいかないこと。