look up any word, like ratchet:
 
1.
Based on random or merely personal preference
Both computers cost the same and had the same features, so in the end I made an arbitrary decision about which to buy.
by LarstaiT November 10, 2003
 
2.
A word that is overused by Maths lecturers.
"That is an arbitrary antelope!!"
"What an arbitrary aston martin"
by A. Physicist December 03, 2011
 
3.
They shoved a stick up their bums and made it up.
The breed standards for Dalmations are completely arbitrary. Who the frick cares if the spots touch each other or not?
by letmenot211 November 09, 2010
 
4.
capricious randomly chosen tyrannical
by Anonymous September 18, 2003