v. i.
Bids his free soul expatiate in the skies. Pope. [ 1913 Webster ]
He expatiated on the inconveniences of trade. Addison. [ 1913 Webster ]
v. t. To expand; to spread; to extend; to diffuse; to broaden. [ 1913 Webster ]
Afford art an ample field in which to expatiate itself. Dryden. [ 1913 Webster ]