weak (http://definr.com/weak)

     adj 1: having little physical or spiritual strength; "a weak radio
            signal"; "a weak link" [ant: strong]
     2: overly diluted; thin and insipid; "washy coffee"; "watery
        milk"; "weak tea" [syn: watery, washy]
     3: lacking power [syn: powerless] [ant: powerful]
     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" [syn: unaccented,
     5: having the attributes of man as opposed to e.g. divine
        beings; "I'm only human"; "frail humanity" [syn: fallible,
         frail, imperfect]
     6: lacking force; feeble; "a forceless argument" [syn: forceless,
         unforceful] [ant: forceful]
     7: lacking physical strength or vitality; "a feeble old woman";
        "her body looked sapless" [syn: decrepit, feeble, infirm,
         sapless, weakly]
     8: (grammar) used of verbs having standard (or regular)
     9: lacking physical strength or vigor
     10: characterized by excessive softness or self-indulgence; "an
         effeminate civilization" [syn: effeminate]