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"
pertaining to or characteristic of an ascetic or the practice of rigorous self-discipline; "ascetic practices"
impossible or difficult to perceive by the mind or senses; "an imperceptible drop in temperature"; "an imperceptible nod"; "color is unperceivable to the touch"
showing lack of emotional involvement; "adopted a degage pose on the arm of the easy chair"- J.S.Perelman; "she may be detached or even unfeeling but at least she's not hypocritically effusive"; "an uninvolved bystander"
free and relaxed in manner; "rather degage after the nervousness he had shown at dinner"- Edmund Wilson