Top definition
Adj.: When something is both unbelievable and ridiculous at the same time, whether good, bad, or otherwise.

Used by Neil Patrick Harris in a Twitter post.

Alternate spelling: unbelievadiculous
As much as I LOVE me my iPhone, it's unbelivadiculous how crazy often my calls get dropped.--NPH
by Fleet Sparrow January 28, 2010
Mug icon

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