muck in
B2 informal inseparable intransitive
In simple words
To help out and do your share of the work, even if it's hard or messy.
Literal meaning: 'Muck' (dirt or farmyard waste) + 'in' — suggests getting your hands dirty alongside others.
Meanings
1 B2
idiomatic
informal
To join in with a group and share work or unpleasant conditions willingly.
"When the flood hit the village, all the neighbours mucked in to clear the damage."
Grammar: inseparable
2 B2
idiomatic
informal
To share living space or resources without complaining, especially in uncomfortable conditions.
"We had to muck in together in a tiny tent for the whole festival weekend."
Grammar: inseparable
Usage notes
Distinctly British English, rarely heard in American English. It carries a positive, communal connotation — the idea that everyone contributes equally. Often used in contexts where conditions are rough or tasks are unpleasant.
Commonly used with
team everyone chores work effort willingness
Forms
Base
muck in
I/you/we/they
3rd person
mucks in
he/she/it
Past simple
mucked in
yesterday
Past participle
mucked in
have + pp
-ing form
mucking in
continuous
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Synonyms
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