New American Oxford Dictionary
inbuilt
in built |ˈinˌbilt ˈɪnˌbɪlt | ▶adjective existing as an original or essential part of something or someone: the body's inbuilt ability to heal itself.
Oxford Dictionary
inbuilt
in |built |ˈɪnbɪlt | ▶adjective existing as an original or essential part of something or someone: the body's inbuilt ability to heal itself.
Oxford Thesaurus
inbuilt
inbuilt adjective 1 a personal computer with an inbuilt CD-ROM drive: built-in, integral, incorporated. ANTONYMS add-on. 2 our inbuilt survival instinct: inherent, intrinsic, innate, ingrained, congenital, natural, native; basic, fundamental, essential, deep-rooted; rare connatural, connate.