What does mercutio find dishonorable?

Mercutio finds dishonorable the idea of fighting for honor, particularly in a way that leads to needless violence and death. He believes that such duels are foolish and that the concept of honor is often used to justify senseless conflicts. His disdain for this notion is evident in his witty and cynical remarks, particularly during his interactions with Romeo and Tybalt. Ultimately, he values loyalty and friendship over the misguided pursuit of honor.