WordNet sense 1 (being or feeling set or kept apart from others):

isolated, separated, set-apart

WordNet sense 2 (independent; not united or joint):

separate, separate

WordNet sense 3 (not fixed in position):

free

WordNet sense 4 (not firmly placed or set or fastened):

unfixed

WordNet sense 5 (showing lack of emotional involvement):

degage, uninvolved

WordNet sense 6 (lacking in interest or care or feeling):

unconcerned