"ascetic practices"
"Be systematically ascetic...do...something for no other reason than that you would rather not do it"
"a desert nomad's austere life"
"a spartan diet"
"a spartan existence"
The old Ascetick christians found a paradise in a desert.
出自: Sir T. Browne
He wore a perfectly plain, almost ascetic dark suit.
出自: R. Rendell
His face seeming ascetic until cheered by a smile.
出自: W. Trevor