1. (a.) Determinate; positive; final; conclusive; unconditional; express.

2. (a.) Limiting; determining; as, a definitive word.

3. (a.) Determined; resolved.

4. (n.) A word used to define or limit the extent of the signification of a common noun, such as the definite article, and some pronouns.

absolute accurate actual admitting no exception all-out arrant authoritative boundary categorical caudal clarifying classical clean-cut clear clear-cut closing complete completing concluding conclusive confining consummate crass decided decisive defining definite determinate determinative determining downright egregious ending endmost entire eventual exact exclusive exhaustive explicit express extreme farthest final finishing fixed flagrant flat flat-out glaring global gross implicit inappealable indisputable intolerable last limitary limitative limiting out-and-out outright peremptory perfect polar positive precious precise profound pronounced proper rank real regular reliable restricting restrictive round settling shattering shocking specific stark stark-staring straight straight-out superlative surpassing tail terminal terminating terminative the veriest thorough thoroughgoing through and through total ultimate unambiguous unbearable uncircumscribed unconditional unconditioned unconscionable undeniable undoubting unequivocal unhampered unhesitating unlimited unmistakable unmitigated unqualified unquestioning unrelieved unreserved unrestricted unspoiled unwaivable utter whole without exception without reserve