mid-15c., "not true," from French impropre (14c.), from Latin improprius, from assimilated form of in- "not, opposite of" (see in- (1)) + proprius (see proper). Meaning "not suited, unfit" is from 1560s; that of "not in accordance with good manners, modesty, decency" is from 1739. Related: Improperly (late 14c.).
雙語例句
1. He would never be improper, he is always the perfect gentleman.
他總是舉止得體，一直是個完美的紳士。
來自柯林斯例句
2. Mr Matthews maintained that he had done nothing improper.
馬修斯先生堅稱他沒有做過非法的事情。
來自柯林斯例句
3. It's considered improper to be unclothed in public.
在公共場合赤身裸體被認為是不成體統的。
來自柯林斯例句
4. The committee concluded that the senators had engaged in improper conduct.
委員會斷定議員們從事了不正當活動.
來自《簡明英漢詞典》
5. He was very indignant with his wife over her improper conduct.