形容詞 rancid:

1. (used of decomposing oils or fats) having a rank smell or taste usually due to a chemical change or decomposition
2. smelling of fermentation or staleness
   同義詞：sour

1. The grocer took back the rancid butter.
   雜貨店老板讓把變了味的黃油退給了他。
2. The butter has gone/turned rancid.
   這黃油已經(jīng)哈喇了。

ran.cid

adj.（形容詞）
Having the disagreeable odor or taste of decomposing oils or fats; rank.
腐臭的：具有變質(zhì)食油或脂肪那種難聞氣味或味道的；惡臭難聞的
Repugnant; nasty:
引起反感的；惡心的：
例句：
rancid remarks.
令人惱怒的評價

來源：
Latin rancidus [past participle of] rancôre [to stink, be rotten]
拉丁語 rancidus [] rancôre的過去分詞 [發(fā)出惡臭的，腐爛的]

【引伸】
rancid.ity 或
ran.cidness
n.（名詞）