look up any word, like blumpkin:
 
1.
A cross-breed, can be a derogatory name for those of mixed heritage.
that mixed girl looks like a mongrel
by MixedRaceCutie October 09, 2006
 
2.
The mongrel is a wiley animal.
<Vertigo> A mongrel is a wiley animal
by Count Vlad of Mongosteinergarten October 14, 2004
 
3.
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
 
4.
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
 
5.
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
 
6.
A knob in a state of high alert, viz a viz a watchdog or robber's cur. A slightly less prepared version is know 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 30, 2008
 
7.
Anyone Conor determines to be a mongrel, or a little bitch
Colleen is a little mongrel
by ftl69 January 15, 2007