A mongrel dog (or sometimes cat); an animal of mixed breed or uncertain origin. / (usually derogatory or humorous) A person of mixed racial or ethnic ancestry.

Alternative form of matha

plural of mutt

(Britain, vulgar slang) Something regarded as outstandingly good.

Alternative spelling of Mutt and Jeff

(Cockney rhyming slang, comparable) Deaf.

(chiefly US, slang) Names given to a pair of companions, usually male, of whom one is tall and the other short.