agon-

1. Any of various competitions (athletic, literary, etc.) for prizes at ancient Greek games.
2. The conflict of characters, as in classical Greek drama.

Absence of gonads.

Of or connected with the agony of dying.
2. Relating to the process of dying or the moment of death, so called because of the former erroneous notion that dying is a painful process.

A judge or overseer in feats of activity; a master of revels.

Not forming an angle; having no angle: "The line indicating the perimeter of a circle is an agonic line."

Full of agony

1. A muscle whose contraction is counter acted by the opposite movement of another muscle, the antagonist.
2. A contender for prizes.
3. A person engaged in a contest or struggle; a protagonist.
4. In physiology, a muscle whose contraction is directly responsible for the movement of a part of the body.

One who trained combatants for the games.

1. Of ancient Greek athletic contests.
2. Contesting; combative.
3. Strained for effect

1. The science of athletic combats or contests in public games.
2. The art of combat or competitions in atheletic games.

1. To make convulsive efforts; struggle.
2. To be in agony; to be in great pain.
3. To contend in the arena; to struggle or strive in physical exercise; to wrestle.