degage

adjectives

free and relaxed in manner
"rather degage after the nervousness he had shown at dinner"- Edmund Wilson
is similar to
without strain or anxiety
"gave the impression of being quite relaxed"; "a relaxed and informal discussion"
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"