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a rather unexplainable term used when you really dont like a person. marked by ugliness, rudeness, fatness, etc.
She is such a mongrel!
by mdoarngiaenlle November 02, 2008
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5
An annoying person who never shuts the fuck up and gives people their opinion when nobody fucking wants to hear it.
guy: wow could she have been anymore of an mongrel today.
guy 2: fuck tell me about it.
by rablerablerable May 29, 2011
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6
A knob in a state of high alert, viz a viz a watchdog or robber's cur. A less highly-strung version is known as a half-mongrel, or slung-mong.

Oaf: "By crikey, I'm so enamoured of that gentlelady that my mongrel is verily frothing at the mouth. I fear I shall soil my tweeds with nut muck!"
by Mr Marky January 31, 2008
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