Having or showing great power, skill, strength, or force: a mighty orator; a mighty blow.
Imposing or awesome in size, degree, or extent: a mighty stone fortress.
Informal To a great degree; extremely. Used as an intensive: mighty fine; mighty tired. See Regional Note at powerful.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.