The term 'Hedonists' Opposites' refers to the concept of ascetics, which is an 8-letter word. Ascetics are people who practice self-denial and abstain from worldly pleasures in order to pursue spiritual goals. This is in contrast to hedonism, which is the pursuit of pleasure and enjoyment. Ascetics often practice fasting, celibacy, and other forms of self-denial in order to focus on their spiritual pursuits.