might·y 
(mītē)
(mītē)adj. might·i·er, might·i·est
1. Having or showing great power, skill, strength, or force: a mighty orator; a mighty blow.
2. Imposing or awesome in size, degree, or extent: a mighty stone fortress.
adv.
Informal
Informal
To a great degree; extremely. Used as an intensive: mighty fine; mighty tired. See Note at powerful.
mighti·ness n.