Open English Wordnet
Nouns
(n)abstainer, asceticsomeone who practices self denial as a spiritual discipline Adjectives
(a)ascetic, asceticalpertaining to or characteristic of an ascetic or the practice of rigorous self-discipline“ascetic practices” (s)ascetic, ascetical, austere, spartanpracticing 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” 