ac·cu·sa·tive (?-kyo?o?z?-t?v)adj.1. Of, relating to, or being the grammatical case that is the direct object of a verb or the object of certain prepositions.2. Accusatory.n.1. The accusative case.2. A word or form in the accusative case.[Middle English acusatif, from Old French, from Latin (c?sus) acc?s?t?vus, (case) of accusation (mistranslation of Greek aiti?tik? (pt?sis), causal (case), (case) indicating the thing caused by the verb, from aiti?, cause, also accusation, charge), from acc?s?tus, past participle of acc?s?re, to accuse; see accuse.]ac·cu?sa·tive·ly adv.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.accusative (??kju?z?t?v) adj1. (Grammar) grammar denoting a case of nouns, pronouns, and adjectives in inflected languages that is used to identify the direct object of a finite verb, of certain prepositions, and for certain other purposes. See also objective52. (Law) another word for accusatorialn (Grammar) grammar a. the accusative caseb. a word or speech element in the accusative case[C15: from Latin; in grammar, from the phrase c?sus acc?s?t?vus accusative case, a mistaken translation of Greek pt?sis aitiatik? the case indicating causation. See accuse] accusatival adj ac?cusatively advCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ac?cu?sa?tive (??kyu z? t?v) adj. 1. of or designating a grammatical case that indicates the direct object of a verb or the object of certain prepositions. 2. accusatory. n. 3. the accusative case. 4. a word or other form in the accusative case. [1400?50; late Middle English (