Unpleasant
来自Big Physics
Safin(讨论 | 贡献)2022年4月27日 (三) 06:06的版本 (建立内容为“Category:etymology == wiktionary == [https://en.wiktionary.org/wiki/unpleasant ref] From [https://en.wikipedia.org/wiki/Middle_English Middle English] unples…”的新页面)
wiktionary
From Middle English unplesaunt, equivalent to un- + pleasant.
etymonline
unpleasant (adj.)
1530s, from un- (1) "not" + pleasant (adj.). Related: Unpleasantly.