rancid

/ˈræn.sɪd/

形容词

（黄油、油等）不新鲜的，变味的，腐败变质的
The rancid odor of the expired milk made her gag as she poured it down the sink.
过期牛奶散发的刺鼻气味让她恶心地将其倒进了水槽。