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-ative — F. -atif, -ative — L. -ātīvus, -ātīva, formed by the addition of -īvus -IVE to pp. stems in -āt-, as dēmonstrātīvus DEMONSTRATIVE; the number of such adjs. was increased in late and medL., and they were the models for many more in the Rom. langs. Cases like represent, representative afforded a formal analogy for talk, talkative (XV). In medL. quālitātīvus, quantitātīvus were formed on the sbs. quālitās, quantitās; hence authoritative, f. authority.