不適切|ふてきせつfutekisetsu[3]nakadaka (mid-high)

1. na-adjective, noununsuitable; inappropriate; improper
   その計画けいかくはいくつかの点てんで不適切ふてきせつなものであると思おもう。↗

   I find the plan to be unsatisfactory in several ways.

• Synonym不適当ふてきとうNeutralNeutral in register and nearly interchangeable with 「不適切」; still in normal use today, though official statements and news commonly use 「不適切」.
• Related筋違いすじちがいNeutralA neutral word for the wrong target or something unreasonable, as in 「筋違いの要求」; the problem is faulty logic, not unfitting behavior for the occasion.
• Related見当違いけんとうちがいNeutralA neutral word for judgments or guesses that are off the mark or beside the point, as in 「見当違いの批判」; the emphasis is on a wrong estimate, not unfitting behavior.
• Antonym適切てきせつNeutralThe direct antonym, also neutral: appropriate and fitting for the occasion, as in 「適切な対応」.
• Antonym妥当だとうNeutralValid and reasonable, the opposite of 「不適切」; neutral in tone but leaning toward written/formal prose, used of judgments.

「不適切」 describes words or actions that don't fit the occasion or one's position, as in 「不適切な発言」; common in official apologies. 「筋違い」 means the wrong target or faulty logic, 「見当違い」 a judgment off the mark, 「不適当」 nearly interchangeable, 「適切」/「妥当」 the antonyms.

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

1. 適切てきせつでないこと。適合てきごうしないこと。