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Any person, thing, or situation which is sketchy, shady, or undesirable.
"That guy just tried to buy me a drink with the come-on line, 'perhaps this will wet your whistle' - how louche can you get!?"
by Willy. February 06, 2007
A Female Douchebag. Derived from lady-douche.
Snookie from Jersey Shore is a major Louche!!
by Chay-Bot August 02, 2010
Used to describe someone or something that simply follows trends to be cool and popular. Often disregarding anything of value in order to make money.
Dave: "Gregory has been wearing that same low cut v-neck t-shirt all week, he looks ridiculous! He must be trying to be cool or something"

Davina: "Omg you're right, that's so louche!"
by Mr. Patron June 21, 2011
To make an anise based drink opalescent, or cloudy, by adding water.
Logan Fils louched to a mustard turd brown when mixed with a 1:4 water ratio.
by Jack Batemaster January 07, 2004
A french word meaning Queer
omg that boy is such a louche
by angel425 October 28, 2009
A loser douche.
Chris was being a louche when instead of coming over to jam, he stayed home to watch tv.
by madrummer10 August 02, 2009