Emily Dickinson Lexicon

EX-PA'TIATE, v.i. [L. expatior; ex and spatior, to wander, to enlarge in discourse, spatium, space, probably allied to pateo, to open. Class Bd.]

1. To move at large; to rove without prescribed limits; to wander in space without restraint. He bids his soul expatiate in the skies. Pope. Expatiate free o'er all this scene of man. Pope.
2. To enlarge in discourse or writing; to be copious in argument or discussion. On important topics the orator thinks himself at liberty to expatiate.