chum - definition and synonyms

verb 

Your browser doesn’t support HTML5 audio

/tʃʌm/
present tense
I/you/we/theychum
he/she/itchums
present participlechumming
past tensechummed
past participlechummed

phrasal verb

chum up

[intransitive]
present tense
I/you/we/theychum up
he/she/itchums up
present participlechumming up
past tensechummed up
past participlechummed up
British informal old-fashioned
to become friends, or to spend time with someone in a friendly way
chum up with:

She’s chummed up with a girl her parents don’t approve of.