(s)built-in, constitutional, inbuilt, inherent, integralexisting as an essential constituent or characteristic“the Ptolemaic system with its built-in concept of periodicity”, “a constitutional inability to tell the truth”
(s)integral, entire, intactconstituting 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”