chum in
C1 informal intransitive
In simple words
When a group of people all put in some money together to pay for something
Literal meaning: 'Chum' here may relate to an old sense of 'chum' meaning roommate or companion who shares expenses; 'in' suggests contributing
Meanings
1 C1
idiomatic
informal
To contribute money along with others towards a shared cost or purchase (rare, dialectal)
"We all chummed in to buy the boss a retirement present."
Usage notes
Extremely rare. Found mainly in older or regional British English. Most modern speakers would use 'chip in' or 'pitch in' instead. May not be recognised by all English speakers. Learners are advised to use 'chip in' as the standard equivalent.
Commonly used with
money cost present bill gift together
Forms
Base
chum in
I/you/we/they
3rd person
chums in
he/she/it
Past simple
chumed in
yesterday
Past participle
chumed in
have + pp
-ing form
chuming in
continuous
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