源自中古英语 relaxen ← 古法语 relaxer ← 拉丁语 relaxāre (“放松,解开”) ← re- (“回”) + laxāre (“解开”) ← laxus (“松的”)。
relax (第三人称单数简单现在时 relaxes,现在分词 relaxing,一般过去时及过去分词 relaxed)