- ascetic, ascetical - pertaining to or characteristic of an ascetic or the practice of rigorous self-discipline; "ascetic practices"
- ascetic, ascetical, austere, spartan - practicing great self-denial; "Be systematically ascetic...do...something for no other reason than that you would rather not do it"- William James; "a desert nomad's austere life"; "a spartan diet"; "a spartan existence"
Antonym: gluttonous (indirect, via abstemious)