To write or speak at length; to be copious in argument or discussion. / (rare) To range at large, or without restraint. / (obsolete) To expand; to spread; to extend; to diffuse; to broaden.

Third-person singular simple present indicative form of expatiate

simple past tense and past participle of expatiate

An act of expatiating

present participle of expatiate

expatiation

plural of expatiation

One who expatiates.

plural of expatiator

expatiatory; expansive; diffusive