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