1.having great power or force or potency or effect;
the most powerful government in western Europe
2.strong enough to knock down or overwhelm;
a knock-down blow
3.having the power to influence or convince;
a cogent analysis of the problem
4.(of a person) possessing physical strength and weight; rugged and powerful;
a hefty athlete
5.displaying superhuman strength or power;
herculean exertions
6.(Southern regional intensive) very;
the baby is mighty cute