dilate vs expatiate

dilate and expatiate both are verbs.

Word	Noun	Adjective	Verb	Adverb
dilate	No	No	Yes	No
expatiate	No	No	Yes	No

As verbs, dilate and expatiate are synonyms defined as:

dilate and expatiate: add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing

Other synonyms of dilate include elaborate, enlarge, expand, exposit, expound, flesh out, lucubrate.

dilate (verb)	expatiate (verb)
become wider	add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing