n. 强烈, 强大, 强力

[ noun ]
physical strength
<noun.attribute>

Mightiness \Might"i*ness\, n.
1. The quality of being mighty; possession of might; power;
greatness; high dignity.

How soon this mightiness meets misery. --Shak.

2. Highness; excellency; -- with a possessive pronoun, a
title of dignity; as, their high mightinesses.