(adj) Cretin-like, idiotic, boorish (Word found in many early 20th Cent dictionaries has enjoyed recent slang usage, especially among hackers. “Crétin” is a not entirely respected French dialectal term for a deformed or retarded person)
Brittney Spears is a cretinous poster-girl.
by Bill Peters November 11, 2006
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vanessa mcgee is very cretinous
hi cretinous gflkwegjklefjglkefjgkletfjhklgjhlgklj
by glen January 27, 2005
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A Person that is: brainless, stupid, child-like, and full of pointless information that makes no sense and appeals only to other cretins. They can be found in abundance in every single populated internet forum, where they race to post as many mind-numbing messages as possible in a single session. In addition, they seemingly interbreed with other cretins, ensuring that their cretinous genes continue long after they end up dead meaning the Internet will never be rid of their kind. More's the pity.
Jodie and her friends like to post messages on forums about how cool it is to kick cats down stairs and throw banana skins at hungry tramps. Clearly they are cretins and should be eradicated from existence.
by Reginald Barrington February 13, 2004
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A person who has little or no intelligence. They usually act without thinking resulting in upsetting/annoying others.
that boy just took my rum and diet coke drank it and didn't replace it, what a cretin
by campbella August 9, 2010
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Severe mental retardation caused by a major deficiency in the thyroid gland.

A rather entertaining insult used by intelligent people to describe people who won't get the meaning of the insult even after a second or third explanation.
Intellectual: "You're rather cretainous, aren't you?"
Cretin: "HUR?"
by J-FizzleNizzle November 29, 2008
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The lowest form of humanity. A person that is a waste of air. A person who is lazy and dosent contribute anything to society.
Mikey Rehmeyer is a cretin.
by cretinw January 14, 2008
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A cretin can only be described as a really dumb, moron, or idiot
although cretin sounds much more official.
The word cretin is derived from the latin kretton. Which means brainless ghoul
He is one of the biggest cretin's on this planet.
by Rasta-Clat November 14, 2004
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