Definition
(adjective) Of or relating to ascetics; characterized by rigorous self-denial or self-discipline; austere; abstinent; involving a withholding of physical pleasure. (noun) One who is devoted to the practice of self-denial, either through seclusion or stringent abstinence.
DFW's Sentence Mr. Ziegler, who has his ascetic side, drinks only bottled water in the studio, and certainly never snacks, so there is no way he is the source of the banana smell
My Sentence Marty attempted to apply an asectic ethos to his internet surfing habits, but he quickly gave up the practice once his spiritual well being made clear trolling for information he did not need was an acceptable, and appreciated, loss.
01: DFW Source: The Host
02: Definition Source: Wiktionary