Search Result for "mightiness": 
Wordnet 3.0

NOUN (1)

1. physical strength;
[syn: might, mightiness, power]

The Collaborative International Dictionary of English v.0.48:

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]
WordNet (r) 3.0 (2006):

mightiness n 1: physical strength [syn: might, mightiness, power]