Characterized by or adhering to strict standards or methods; exacting and thorough: a rigorous study of the medication; a rigorous researcher. 2. a. Harsh, severe, or demanding: a rigorous taskmaster; a rigorous schedule.
In "The Most Dangerous Game", Rainsford is a dynamic character. The way he thinks about hunting changes while being hunted by Zaroff. Rainsford only experiences an external conflict in the story.