likely to fail under stress or pressure; "the weak link in the chain"
wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings; "I'm only a fallible human"; "frail humanity"
deficient in magnitude; barely perceptible; lacking clarity or brightness or loudness etc; "a faint outline"; "the wan sun cast faint shadows"; "the faint light of a distant candle"; "weak colors"; "a faint hissing sound"; "a faint aroma"; "a weak pulse"
not having authority, political strength, or governing power; "a weak president"
(used of verbs) having standard (or regular) inflection
lacking bodily or muscular strength or vitality; "a feeble old woman"; "her body looked sapless"