To speak or write at length: expatiated on the subject until everyone was bored. (verb-intransitive)
To wander freely.(verb-intransitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "expatiate" in a sentence
"Godwin offers a glowing description of this future state, where all people share equally in the "bounties of nature" and are free to "expatiate" in the realms of intellectual discovery:"
"And why would we need a critic to expatiate on his/her emotional reactions in this way?"
"Really there is no need to expatiate upon the change, except to point out that social media by its very nature engages this cultural shift."