Synonyms of intrinsic

1. intrinsic (vs. extrinsic), intrinsical, built-in, constitutional, inbuilt, inherent, integral, inner, internal, intimate, essential, inalienable#1, unalienable: usage: belonging to a thing by its very nature; "form was treated as something intrinsic, as the very essence of the thing"- John Dewey
2. intrinsic, internal (vs. external): usage: situated within or belonging solely to the organ or body part on which it acts; "intrinsic muscles"