It depends on a way of giving up the fight. When you win and have fun you don't get corrupted. But if you submit without giving a fight it's another story. So here's the list I tried:
Witch's amulet: -20 max sanity
Mysterious signet: -20 max sanity
Submit to a troll during fight: -10 sanity
Submit to the alpa wolf: -20 sanity
Submit to Vicoria: -10 sanity.
Submit to a slime: -10 sanity.
Rhot (bad ending for tribe and also make him aroused enough): -40 sanity