deficient in intelligence or mental power
"a weak mind"
likely to fail under stress or pressure
"the weak link in the chain"
deficient in magnitude
lacking clarity or brightness or loudness etc
"a faint outline"
"the wan sun cast faint shadows"
"the faint light of a distant candle"
"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"
deficient or lacking in some skill
"he's weak in spelling"
tending downward in price
"a weak market for oil stocks"
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"
(used of vowels or syllables) pronounced with little or no stress
"a syllable that ends in a short vowel is a light syllable"
"a weak stress on the second syllable"
thin and insipid
wanting in physical strength
"a weak pillar"