What is the meaning of weak?

adjective

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