Open English Wordnet
Adjectives
(a)weakwanting in physical strength“a weak pillar” (s)watery, washy, weakoverly diluted; thin and insipid“washy coffee”,
“watery milk”,
“weak tea” (s)unaccented, light, weak(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” (s)fallible, frail, imperfect, weakwanting 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” (s)weaktending downward in price“a weak market for oil stocks” (s)weakdeficient or lacking in some skill“he's weak in spelling” (s)weak(used of verbs) having standard (or regular) inflection (s)weaknot having authority, political strength, or governing power“a weak president” (s)faint, weakdeficient 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” (s)weaklikely to fail under stress or pressure“the weak link in the chain” (s)weakdeficient in intelligence or mental power“a weak mind”