weak in WordNet English dictionary

1. lacking bodily or muscular strength or vitality
   "a feeble old woman"; "her body looked sapless"
   decrepit  debile  feeble  infirm  rickety  sapless  weak  weakly 
   
2. 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"
   faint  weak 
   
3. 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"
   fallible  frail  imperfect  weak 
   
4. (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"
   unaccented  light  weak 
   
5. overly diluted; thin and insipid
   "washy coffee"; "watery milk"; "weak tea"
   watery  washy  weak 
   
6. wanting in physical strength
   "a weak pillar"
   weak 
   
7. tending downward in price
   "a weak market for oil stocks"
   weak 
   
8. likely to fail under stress or pressure
   "the weak link in the chain"
   weak 
   
9. not having authority, political strength, or governing power
   "a weak president"
   weak 
   
10. (used of verbs) having standard (or regular) inflection
    weak 
    
11. deficient in intelligence or mental power
    "a weak mind"
    weak 
    
12. deficient or lacking in some skill
    "he's weak in spelling"
    weak