flesh out

Verb (3)

1. make fat or plump“We will plump out that poor starving child”Synonyms: fattenfatfill outplumpplump outfatten outfatten upMore general change, alterInvolves feed, give
2. add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing“She elaborated on the main ideas in her dissertation”Synonyms: elaboratelucubrateexpatiateexpositenlargeexpandexpounddilateMore general clarify, clear upMore specific exemplify, set forth, specify, detail
3. become round, plump, or shapely“The young woman is fleshing out”Synonyms: roundfill outMore general gain, put on