chum up with

chum up with someone

to become friendly with someone. He seems to have chummed up with Fred. Juan quickly chummed up with all the guys in his class.

Name	Pronounced	Usage
Lone	LO-ne	Danish
Eufemia	e-oo-FE-myah (Spanish)	Italian, Spanish
Stefanus	-	Dutch
Alister	-	Scottish
Zula (1)	-	Polish (Rare)
Rosemary	['rəuzmeri]