extrinsic (adj.)

"not of the essence or inner nature of a thing," 1540s, from French extrinsèque, from Late Latin extrinsecus (adj.) "outer," from Latin extrinsecus (adv.) "outwardly, on the outside; from without, from abroad," from exter "outside" (from ex "out of;" see ex-) + in, suffix of locality, + secus "beside, alongside," originally "following," from PIE *sekw-os "following," suffixed form of root *sekw- (1) "to follow."