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