early 15c., "healthy condition," from Middle French sanité "health," from Latin sanitatem (nominative sanitas) "health, sanity," from sanus "healthy; sane" (see sane). Meaning "soundness of mind" first attested c. 1600.
例文
1. He pleads for sanity in a lunatic world.
彼はこの混乱した世界でも頭脳明晰さを保つことを祈っている。
2.His behaviour was so strange that I began to doubt his sanity .
彼は奇妙な行動をしていて、私は彼が正気かどうか少し疑っている。
3.She managed to keep her sanity throughout the ordeal.
その苦難の中で彼女は常に意識を正常に保っていた。
4.I doubt the sanity of such a plan.
この計画が賢明かどうか疑問です。
5.He and his wife finally had to move from their apartment just to presrve their sanity .