a person believes in the greater good for the greater number of people; in ethics, it's the theory that the rightness or wrongness of an action is determined by its usefulness in bringing about the most happiness of all those affected by it.
if your not genetically qualified to be a nazi but still agree with most of the things they stand for.... you're a utilitarian.
A grand master of utility's such as gas or heat ect.
As the Utilitarian NO HEAT FOR YOU!
An object with great use or puprose. Often said by nerds, but could be said by anyone else, if there is no other word that could be used.
Guy: Dude the Ipod Touch can do a helluv alot!
Guy with Ipod Touch: Yeah, it's so utilitarian.