See quotation 1790.
1790. The long drawling pronunciation of the termination -ive in such words as motive, productive, has furnished our brethren with a fund of derision.Noah Webster in the Am. Mercury: Mass. Spy, Sept. 30.
1843. See GRIT.
1855. Ive a fust rate reason for bein sot and posityve, and I mean jest what I say.C. W. Philleo, Twice Married, Putnams Mag., vi. 191/2 (Aug.).