- built-in, constitutional, inbuilt, inherent, integral - existing as an essential constituent or characteristic; "the Ptolemaic system with its built-in concept of periodicity"; "a constitutional inability to tell the truth"
Antonym: extrinsic (indirect, via intrinsic)
- integral, entire, intact - constituting the undiminished entirety; lacking nothing essential especially not damaged; "a local motion keepeth bodies integral"- Bacon; "was able to keep the collection entire during his lifetime"; "fought to keep the union intact"
Antonym: fractional (indirect, via whole)