dis-(reversal) + comfit(confection: put together)

make (someone) feel uneasy or embarrassed: (誰かを)不安にさせる、困惑させる

he was not noticeably discomfited by her tone. : 彼は彼女の口調にはさほど困惑していなかった。

The words discomfit and discomfort are etymologically unrelated. Further, discomfit is a verb and discomfort is primarily a noun. But in modern use, their principal meanings as a verb have collapsed into one: ‘make (someone) feel uneasy.’.

discomfitとdisconfrotは語源の上では関係がない。さらにdiscomfitは動詞でdiscomfortは元来は名詞だ。しかし現代的な用法として、それらの動詞としての主な意味は「(誰かを)不安にさせる」という一つの意味にまとまった。

Middle English (in the sense ‘defeat in battle’): from Old French desconfit, past participle of desconfire, based on Latin dis- (expressing reversal) + conficere ‘put together’ (see confection).