The Collaborative International Dictionary of English v.0.48:

Sycophantic \Syc`o*phan"tic\, Sycophantical \Syc`o*phan"tic*al\,
   a. [Cf. Gr. ? slanderous.]
   Of or pertaining to a sycophant; characteristic of a
   sycophant; meanly or obsequiously flattering; courting favor
   by mean adulation; parasitic.
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         To be cheated and ruined by a sycophantical parasite.
                                                  --South.
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         Sycophantic servants to the King of Spain. --De
                                                  Quincey.
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