adj. pronounced tie-us.
This word is short for matias. It is used in reference to anything that is whack, overly pushy, annoying, a front, nauseating, un-crunk, or just not cool.
Person1: "Can you believe thatwhack ass n*#$% trynna come talk game to me?"
Person2: "yeah gurl, that s#@* was tias."
The coolest chick in school. Comedian, all day everyday. She so nice to everyone and doesnt seem to have a clique, which is so cool. A good friend to all and takes no crap from others. Great girl to fall in love with. And i hear she makes bum cakes!