S: (adj) degage, detached, uninvolved (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"
W: (adj) concerned [Indirect via unconcerned] (feeling or showing worry or solicitude) "concerned parents of youthful offenders"; "was concerned about the future"; "we feel concerned about accomplishing the task at hand"; "greatly concerned not to disappoint a small child"