Fragile, a.
Etymology: [L. fragilis, from frangere to break; cf. F. fragile. See Break, v. t., and cf. Frail, a.]
Easily broken; brittle; frail; delicate; easily destroyed. The state of ivy is tough, and not fragile. Bacon.
Syn. -- Brittle; infirm; weak; frail; frangible; slight. -- Frag"ile*ly, adv.
Shades of meaning
Fernald lists fragile only as an antonym, under healthy.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given