Top Definition
British slang for "insane". Derived from "certifiably insane".
The evil genius villains in James Bond movies appear to be highly intelligent when, in actuality, they are certifiable.
by little scottie October 07, 2005

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(adj) Completely NUTS. Past the point of "ticking". Ready to flip OUT.
Oh shit! That chick's been off her meds for a few days now! She's certifiable!
by starlight88 February 04, 2010

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt