Expatiate

Part of speech: verb (v.)

1. To range at large, or without restraint. Bids his free soul expatiate in the skies. Pope.

2. To enlarge in discourse or writing; to be copious in argument or discussion; to descant. He expatiated on the inconveniences of trade. Addison.

Part of speech: verb (v.)

To expand; to spread; to extend; to diffuse; to broaden. Afford art an ample field in which to expatiate itself. Dryden.