Found 2 items, similar to mightiness.
English → English (WordNet) Definition: mightiness mightiness n : physical strength [syn: might, power]
English → English (gcide) Definition: Mightiness Mightiness \Might"i*ness\, n. 1. The quality of being mighty; possession of might; power; greatness; high dignity. [1913 Webster] How soon this mightiness meets misery. --Shak. [1913 Webster] 2. Highness; excellency; -- with a possessive pronoun, a title of dignity; as, their high mightinesses. [1913 Webster]