integral

1 being a part of the innermost nature of a person or thing a car dealer respected for his integral honesty and straightforwardness with customers Synonyms built-in, constitutional, constitutive, essential, hardwired, immanent, inborn, inbred, indigenous, ingrain, ingrained (also engrained), innate, inherent, intrinsic, native, naturalRelated Words basic, deep-rooted, elemental, fundamental; congenital, hereditary, inherited, inmost, inner, interior; internal; characteristic, distinctive, peculiar; habitual, inveterate; normal, regular, typicalNear Antonyms alien, foreign; accidental, coincidental, incidental; acquired, adscititious; superficial, surface; exterior, externalAntonyms adventitious, extraneous, extrinsic

2 impossible to do without she's an integral member of the team of archaeologists at that dig Synonyms all-important, critical, imperative, indispensable, essential, must-have, necessary, necessitous, needed, needful, required, requisite, vitalRelated Words prerequisite; compulsory, mandatory, nonelective, obligatory; consequential, crucial, important, major, material, meaningful, momentous, significant, substantial, weighty; basic, central, fundamental, key, organic; insistent, persistent, pressing, urgentNear Antonyms undesired, unwanted; inconsequential, insignificant, unimportant; excess, external, extra, extraneous, superfluous, surplusAntonyms dispensable, inessential, needless, nonessential, unessential, unnecessary, unneeded

3 not lacking any part or member that properly belongs to it a prep school that adheres to the belief that athletics are essential to an integral life Synonyms compleat, comprehensive, entire, full, grand, intact, complete, perfect, plenary, total, wholeRelated Words unabridged, uncut, undiminished; all-out, exhaustive, extensive, maximal; full-blooded, full-blown, full-bore, full-fledged, full-on, full-out, full-scaleNear Antonyms abbreviated, abridged, cut, diminished, reducedAntonyms imperfect, incomplete, partial