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3. as common as muck

as common as muck

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as common as muck

Low-class. Primarily heard in UK, Australia. Considering she's wearing an outfit like that in public, she must be as common as muck.

See also: common, muck

as common as muck

  (British & Australian informal)

an impolite way of describing someone who is from a low social class You can tell from the way she talks she's as common as muck.

See also: common, muck