strong -
having strength or power greater than average or expected; "a strong radio signal"; "strong medicine"; "a strong man"
weak deficient in intelligence or mental power; "a weak mind"
powerful having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument"
strength the property of being physically or mentally strong; "fatigue sapped his strength"
beardown with full strength; "his beardown performance in the exhibition game"
beefed-up made greater or stronger; "beefed-up sales efforts"
brawny,
hefty,
sinewy,
muscular,
powerful (of a person) possessing physical strength and weight; rugged and powerful; "a hefty athlete"; "a muscular boxer"; "powerful arms"
ironlike exhibiting strength or hardness like that of iron; "ironlike determination"; "ironlike nerves"; "ironlike discipline of the Marines"
knock-down,
powerful strong enough to knock down or overwhelm; "a knock-down blow"
noticeable capable or worthy of being perceived; "noticeable shadows under her eyes"; "noticeable for its vivid historical background"; "a noticeable lack of friendliness"
strengthened,
reinforced given added strength or support; "reinforced concrete contains steel bars or metal netting"
impotent lacking power or ability; "Technology without morality is barbarous; morality without technology is impotent"- Freeman J.Dyson; "felt impotent rage"
effectual,
efficacious,
effective marked by qualities giving the power to produce an intended effect; "written propaganda is less efficacious than the habits and prejudices...of the readers"-Aldous Huxley; "the medicine is efficacious in stopping a cough"
powerful having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument"
strong -
immune to attack; incapable of being tampered with; "an impregnable fortress"; "fortifications that made the frontier inviolable"; "a secure telephone connection"
powerful having great power or force or potency or effect; "the most powerful government in western Europe"; "his powerful arms"; "a powerful bomb"; "the horse's powerful kick"; "powerful drugs"; "a powerful argument"
strong -
strong and sure; "a firm grasp"; "gave a strong pull on the rope"