mid-14c., "morally weak," from Old French fraile, frele "weak, frail, sickly, infirm" (12c., Modern French frêle), from Latin fragilis "easily broken" (see fragility). It is the Frenchified form of fragile. Sense of "easily destroyed, liable to break" in English is from late 14c. The U.S. slang noun meaning "a woman" is attested from 1908; perhaps with awareness of Shakespeare's "Frailty, thy name is woman."
例文
1. The frail craft rocked as he clambered in.
彼が這ってきたとき、その割れやすい工芸品が揺れた。
2.Mother was becoming too frail to live alone.
母親は一人暮らしができないほど衰弱している。
3.The boy was frail and never ganged with his fellows at school.
この男の子は体が弱く、同級生たちと遊んだことがない。
4.My grandmother was becoming more and more sad and frail as the years went by.