A tourneytard (or, tourneyfag) is a person who has become corrupted by the competitive side of a game (tournaments, etc.) to the point at which they no longer play it for entertainment (instead playing it to prove that they are better than someone else). As a result, they attempt to remove elements that could possibly in any way hinder their chance of winning. One example (the only notable one, in fact) of a game which is surrounded by a significant amount of tourneyfags is Super Smash Bros. Melee (Gamecube).
The difference between a tourneytard and a normal person is this:
If a normal person loses due to random and inexplicable chance, they laugh and forget about it.
If this happens to a tourneytard, they whine and sulk because they care so much. Losing deeply wounds them.
There is no known cure to being a tourneytard; however, this is solely because no-one has yet dared to try and discover one.
Examples of use:
1. "Everyone who plays it at school are complete tourneytards, they insist we play by the most boring rules just so they don't have to suffer the 'pain' of losing. ¬_¬"
2. "You're only calling me a tourneytard because you suck at the game! Waaa!"
Tourneytards are people that play at "competitive" level and complain about every minor detail, people that don't play for fun, if a game doesn't meet their standarts they bash it.
They use the insult "scrub" very often, the word "nerfed" and confusing number notations as well.
That guy is a complete tourneytard, he won't shut up about how they "nerfed" Robo-Ky in Guilty Gear Slash!
An insult made by people who suck at video games.
What a tourneytard, he used a bunch of glitches to beat me.