Ascetic [uh-set-ik] is a noun meaning, "a person who follows a lifestyle of contemplation and extreme self-denial " and it's an adjective (asceticism) meaning, "extremely strict regarding religious practices; austere; following extreme beliefs on abstinence."
Here's a sentence:
He could smell her sweet breath mingling with her heady lavender perfume as she spoke to him of joyous moments in her garden, and the hunger coursing through his body made him curse the moment he'd turned to a life of asceticism and denied himself such pleasures as her.
Do you have a character with ascetic leanings?
Tell us about them! :-)