Definition of Weak

Adjective: weak (weaker,weakest) week

Wanting in physical strength
"a weak pillar"
Overly diluted; thin and insipid
"weak tea";
- watery, washy
(used of vowels or syllables) pronounced with little or no stress
"a weak stress on the second syllable";
- unaccented, light
Wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings
"I'm only a weak human";
- fallible, frail, imperfect
Tending downward in price
"a weak market for oil stocks"
Deficient or lacking in some skill
"he's weak in spelling"
Lacking bodily or muscular strength or vitality
"a weak old woman";
- decrepit, debile, feeble, infirm, rickety, sapless, weakly
(used of verbs) having standard (or regular) inflection
Not having authority, political strength, or governing power
"a weak president"
Deficient in magnitude; barely perceptible; lacking clarity, brightness or loudness etc
"weak colours"; "a weak pulse";
- faint
Likely to fail under stress or pressure
"the weak link in the chain"
Deficient in intelligence or mental power
"a weak mind"