Agonistic
Agonistic ({not transcribed}) , adjective
[Greek {not transcribed}. See Agonism.]
Pertaining to violent contests, bodily or mental; pertaining to athletic or polemic feats; athletic; combative; hence, strained; unnatural.
As a scholar, he [Dr. Parr] was brilliant, but he consumed his power in agonistic displays.
Also: Agonistical