elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, expound, dilate

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"

• detail — provide details for
• set forth, expound, exposit — state
• exemplify, illustrate, instance — clarify by giving an example of
• specify, particularize, particularise, specialize, specialise — be specific about

• clarify, clear up, elucidate — make clear and (more) comprehensible