up on something, be

Be well informed or up-to-date about something, as in I'm not up on the latest models of cars. [Colloquial]

Name	Pronounced	Usage
Herminio	er-MEE-nyo	Spanish
Dymphna	DIMF-na	Irish
Simon	SIE-mən (English), see-MAWN (French), ZEE-mawn (German), SEE-mawn (Dutch)	English, French, Swedish, Norwegian, Danish, German, Dutch, Hungarian, Slovene, Romanian, Macedonian
Shi	-	Chinese
Ashton	['æʃtən]
Michelyne	-	English (Rare)