p, c, h, m, u are letters that make 'chum up'
HUM, hum, up, chum are words within 'chum up'
1 possible definitions for 'chum up'
Under this definition, chum up is a verb and has the following properties:
pal, pal up have the same meaning as 'chum up'
'chum up' can be a type of befriend.
chum, buddy, sidekick, pal, crony, brother are derivatives of 'chum up'.