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."
inseparable
muck in
B2 informal inseparable intransitive
To join others and willingly share in work or unpleasant tasks without complaining.
In plain English
To help out and do your share of the work, even if it's hard or messy.
What does "muck in" mean?
2 meanings, ordered from most common to least. Color-coded by CEFR level.
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."
inseparable
Literal vs figurative
Words literally mean
'Muck' (dirt or farmyard waste) + 'in' — suggests getting your hands dirty alongside others.
Actually means
To help out and do your share of the work, even if it's hard or messy.
Usage tip
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.
Words that pair with "muck in"
Natural word combinations native speakers use most often.
team everyone chores work effort willingness
How to conjugate "muck in"
The five tense forms you'll use most often.
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
Hear "muck in" in the wild
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Other ways to say "muck in"
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