The Collaborative International Dictionary
Sycophantical
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.
To be cheated and ruined by a sycophantical parasite.
--South.
Sycophantic servants to the King of Spain.
--De
Quincey.
Wiktionary
sycophantical
a. (alternative form of sycophantic English)