Extremely rigid in self-denial and devotions; austere; severe.
In the early church, one who devoted himself to a solitary and contemplative life, characterized by devotion, extreme self-denial, and self-mortification; a hermit; a recluse; hence, one who practices extreme rigor and self-denial in religious things.
I fall into that nebulous, quote-unquote, normal American woman size that legions of fashion stylists detest. For the record, I'm a size 8 - this week, anyway. Many stylists hate that size because I think to them, it shows that I lack the discipline to be an ascetic; or the confident, sassy abandon to be a total fatty hedonist. Mindy Kaling
A commercial society whose members are essentially ascetic and indifferent in social ritual has to be provided with blueprints and specifications for evoking the right tone for every occasion. Marshall McLuhan