The Thrill is a heady euphoria described differently given the situation in which a combatant is involved. It is a feeling experienced by the person and, likely, each person's interperetation of it is unique.
Seemingly, The Thrill 'sings' within the combatant's mind and provides him with focus and a sense of glory, thereby affording him the internal confidence to persevere, even in the face of deadly adversarial conflict.
The Thrill, as always, is fleeting once battle itself has ended.
The Thrill seems to be connected to a Voidspren known as Nergaoul. Knights Radiant are immune to the Thrill's effects, and are often racked with feelings of disgust and nausea if it starts to come upon them.
According to Taravangian, the Thrill only affects people who are in a certain proximity to Nergaoul. Up until Taravangian's takeover of Jah Keved, it seemed as if the Thrill was largely focused in Alethkar. Now, it appears to be moving westward, into Jah Keved and beyond.
Types of ThrillsEdit
There exist the Thrill of Contest and the Thrill of Battle, of which readers know. It is possible that more 'Thrills' will be made known to readers in the coming eight novels within The Stormlight Archive.