Meanings
How to pronounce "chum up":
AU
To be friendly toward (with or to) someone, especially in an ingratiating way; to form a friendship (with).
Example: "I chummed up with a few of my new work colleagues."
To initiate (a new prisoner) through a ritual involving beating him with sticks and swords, accompanied by music, to extort money from him.[1]
Example Sentences
1
The neighbors often chum up for barbecues in the summer.
2
The professor encouraged the students to chum up for group discussions.
3
The salesperson tried to chum up with the potential client to secure the deal.