Pronunciation: (mī'tē), [key]
—adj., might•i•er, might•i•est,
1. having, characterized by, or showing superior power or strength: mighty rulers.
2. of great size; huge: a mighty oak.
3. great in amount, extent, degree, or importance; exceptional: a mighty accomplishment.
Informal.very; extremely: I'm mighty pleased.
(used with a pl. v.) mighty persons collectively (usually prec. by the): the rich and the mighty.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.