flesh out vs expatiate

flesh out and expatiate both are verbs.

Word	Noun	Adjective	Verb	Adverb
flesh out	No	No	Yes	No
expatiate	No	No	Yes	No

As verbs, flesh out and expatiate are synonyms defined as:

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

flesh out (verb)	expatiate (verb)
become round, plump, or shapely	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
make fat or plump