Definition of CRUD

foul matter that mars the purity or cleanliness of something <you must have stepped in something, because there's crud all over your shoe>
Synonyms crud, dirt, grime, gunk, muck, smut, soil
Near Antonyms cleanliness, cleanness
slangĀ  a person whose behavior is offensive to others <I don't care how hip that clothing store is, their employees behave like absolute cruds>

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