ascetical

(a) pertaining to or characteristic of an ascetic or the practice of rigorous self-discipline
- ascetic practices
ascetic,
(s) 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
ascetic, austere, spartan,

ascetic austere spartan

ascetically