enlarge (up)on (something)

To add or supply more information or details about something. I can see you aren't familiar with this material yet, so allow me to briefly enlarge upon it for you. I asked the boss to enlarge on the details of the proposal for me.

Common Names:

Name	Pronounced	Usage
Odarka	-	Ukrainian
Enlil	EN-lil	Near Eastern Mythology
Addis	['ædis]
Godfried	KHAWT-freet	Dutch
Leontiy	-	Russian
Feliks	fye-LEEKS (Russian), fee-LEEKS (Russian), FE-leeks (Polish)	Russian, Slovene, Polish