peripheral (n.)
peripheral (adj.)
- ambient
 - apparent
 - circling
 - circumferential
 - cortical
 - embracing
 - encircling
 - encompassing
 - enveloping
 - epidermic
 - exterior
 - external
 - extrinsic
 - incidental
 - inessential
 - irrelevant
 - minor
 - neighboring
 - open
 - out
 - outer
 - outermost
 - outlined
 - outlying
 - outmost
 - outside
 - outstanding
 - outward
 - public
 - roundabout
 - secondary
 - seeming
 - suburban
 - superficial
 - surface
 - surrounding
 - tangential
 - unessential
 - unimportant
 - unnecessary