Synonyms and related words :
actual, appropriate, basic, central, characteristic, congenital, connate, constitutional, deep, deep-seated, distinctive, distinguished, elemental, esoteric, essential, fundamental, genuine, hereditary, idiocratic, idiosyncratic, immanent, implanted, implicit, in character, inalienable, inborn, inbred, indoor, indwelling, infixed, ingrained, inherent, inherited, inmost, innate, inner, innermost, inside, interior, internal, intestine, intimate, inward, inwrought, irreducible, marked, native, natural, organic, peculiar, private, proper, quintessential, real, resident, secret, single, singular, subjective, TRUE, true to form, unalienable, unchallengeable, underlying, unique, unquestionable