The Collaborative International Dictionary of English v.0.48:

Complimental \Com`pli*men"tal\, a.
   Complimentary. [Obs.]
   [1913 Webster]

         Languages . . . grow rich and abundant in complimental
         phrases, and such froth.                 --Sir H.
                                                  Wotton.
   -- Com`pli*men"tal*ly, adv. [Obs.] --Boyle. --
   Com`pli*men"tal*ness, n. [Obs.] --Hammond.
   [1913 Webster]