不適切な

inappropriate

→ 不適切だ
phrase Rare #32,756
inappropriate A な-adjective used before a noun to mean that something is unsuitable, improper, or not acceptable. The form 不適切だ is used when it ends a sentence.
JA: これは不適切な発言です。
EN: This is an inappropriate remark.

この不適切なクソは全部

All this inappropriate shit

— 罪人たち (2025)

その計画はいくつかの点で不適切なものであると思う

I think that plan is inappropriate in several respects.