Ex*pa"ti*ate (?), v. i. [imp. & p. p. Expatiated (?); p. pr. & vb. n. Expariating (?).] [L. expatiatus, exspatiatus, p. p. of expatiari, exspatiari, to expatiate; ex out + spatiari to walk about spread out, fr. spatium space. See Space.] 1. To range at large, or without restraint.

Bids his free soul expatiate in the skies.

2. To enlarge in discourse or writing; to be copious in argument or discussion; to descant.

He expatiated on the inconveniences of trade.

Ex*pa"ti*ate, v. t. To expand; to spread; to extend; to diffuse; to broaden.

Afford art an ample field in which to expatiate itself.

• To range at large, or without restraint.
  
• To enlarge in discourse or writing; to be copious in argument or discussion; to descant.
  
• To expand; to spread; to extend; to diffuse; to broaden.