形容词

1. 外来的;外在的;外部的
Extrinsic reasons, forces, or factors exist outside the person or situation they affect.

1. not forming an essential part of a thing or arising or originating from the outside

e.g. extrinsic evidence
an extrinsic feature of the new building
that style is something extrinsic to the subject
looking for extrinsic aid