Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

WORD ORIGIN

mid-13c., "cow dung and vegetable matter spread as manure," from a Scandinavian source, cf. Old Norse myki, mykr "cow dung," Danish møg, from Proto-Germanic *muk-, *meuk- "soft." Meaning "unclean matter generally" is from c.1300. Muck-sweat first attested 1690s.

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.