speak on

speak (up)on something

to talk about a particular topic. (Upon is formal and less commonly used than on.) This evening, I will speak upon the subject of Plato's thoughts on the universe. What will you speak on today?

Common Names:

Name	Pronounced	Usage
Justice	JUS-tis	English
Doyle	-	Irish
Temujin	-	History
Askr	-	Norse Mythology
Chayim	-	Hebrew
Holcomb	['hɔlkəum]