He was by then so frail that most of us suspected that he could scale no further heights.
I had watched her shoot up into a slender but exquisitely formed woman from a frail, awkward child.
Albrecht Muth, accused of killing his frail old wife, is playing a bizarre cat and mouse game with his lawyers.
mid-14c., "morally weak," from Old French fraile "weak, frail, sickly, infirm" (Modern French frêle), from Latin fragilis "easily broken" (see fragility). Sense of "liable to break" is first recorded in English late 14c. The U.S. slang noun meaning "a woman" is attested from 1908.
A woman, esp a young woman: in persuading frails to divulge what they know (1905+)