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muck in

British informal phrase meaning to pitch in and help with a task, especially dirty or unpleasant work, or to share space and resources without complaint.

ˈmʌk ɪn182 viewsLast reviewed Jun 29, 2026+ Add a definition
🇬🇧 British & Irish slang
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UK
#1·Apr 28, 2026UK

British informal phrase meaning to pitch in and help with a task, especially dirty or unpleasant work, or to share space and resources without complaint. Carries a positive, communal spirit — mucking in is what good teammates do. Often heard in working-class or military contexts where collective effort is valued over individual preference.

When the floods hit, everyone in the village mucked in to clear the debris from the road.
Origin: From 'muck' (dirt, mess) as a verb meaning to deal with dirty work; '-in' as a particle denoting participation. Editorial expansion authored on Slangora.
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UK
#2·Apr 27, 2026UK

(informal, UK) To join in with work.

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UK
#3·Apr 27, 2026UK

(informal, UK) To share in.

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UK and Irish slang — Cockney, Scouse, Geordie, Yorkshire, Glaswegian, Brummie, Welsh, West Country, plus Irish English. Centuries of regional dialects feeding into modern British and Irish street talk.

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