that which is utterly ridiculous, exaggerated, or nonsensical.
"Maaan that shiiit was cretaceous!"
"yo hubert, that's totally cretaceous!!
by Feke September 05, 2007

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Top Definition
1. An ancient creature or person which should have been long dead.
2. A boring situation which one should have stopped persueing hours ago
"Maaan, these waves are Cretaceous dude. We should split and catch outselves a fresh pie"
by Kigs December 06, 2006

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something or someone that is too cool for any other word; alternative to saying "cool" because it is over-used
That new Franz Ferdinand album is cretaceous , man.
by Capital V December 17, 2005

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