Meanings
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1
adj
informal, especially British: covered with dirt or mud; dirty and messy
Leave your mucky boots by the back door.
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2
adj
British informal: obscene or sexually explicit
The editor rejected the mucky story as unsuitable for a children's magazine.
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3
verb
dialectal British: to make something dirty or muddy
Wipe the brush first, or you will mucky the clean floor.
Thesaurus
Etymology
Formed from muck + -y. Muck came through Middle English from a Scandinavian source meaning dung or manure. The adjective developed the general sense 'dirty or muddy' and then the informal sexual sense. A dialectal transitive verb, as in 'mucky it,' treats the adjective as 'make dirty.'