weak

Synonyms: anemic debilitated decrepit delicate effete enervated exhausted faint feeble flaccid flimsy forceless fragile frail hesitant impuissant infirm insubstantial irresolute lackadaisical languid languorous limp makeshift out of gas powerless prostrate puny rickety rocky rotten senile shaky sickly sluggish spent spindly supine tender torpid uncertain undependable unsound unsteady unsubstantial wasted wavering weakened weakly wobbly

Antonyms: firm potent strong

Synonyms: faint-hearted fluctuant frightened hesitant impotent indecisive ineffectual infirm insecure irresolute laidback nerveless nervous palsied powerless shaky soft spineless tender timorous uncertain undependable unreliable unstable unsure vacillating wavering weak-kneed wimpy wishy-washy wobbly zero

Antonyms: bold brave confident

Synonyms: bated dim distant dull feeble gentle imperceptible inaudible indistinct low muffled pale poor quiet reedy slight small stifled thin unaccented unstressed whispered

Antonyms: loud noisy potent strong

Synonyms: faulty flabby flimsy forceless green handicapped hollow immature implausible impotent improbable inadequate incompetent incomplete inconceivable inconclusive incredible ineffective ineffectual inept invalid lacking lame limited pathetic poor raw shaky shallow slight slim small spineless substandard thick thin unbelievable unconvincing unprepared unqualified unsatisfactory unsubstantial unsure untrained wanting

Antonyms: able capable fit sufficient

Synonyms: accessible assailable defenseless helpless indefensible unguarded unprotected unsafe untenable wide-open woundable

Antonyms: guarded protected safe secure

Synonyms: dilute diluted insipid milk-and-water runny tasteless thin washy waterish watery wishy-washy

Antonyms: concentrated strong thick