"Exact nature" refers to the precise characteristics or qualities of something, without any ambiguity or guesswork. It describes the specific details or true essence of a thing or situation. Full definition
Under a group term life insurance policy, it is important to disclose exact nature of work. (securenow.in)
The protagonists of these works, derived from pictures in magazines or scientific books, are captured while engaging in activities whose exact nature seems both mundane and mysterious («they're just sitting there breathing,» Borremans told an interviewer), but the artist manages to freight these protagonists, and the air around them, with great emotional tension. (artbook.com)
At first I was very surprised that this simulation racer would put this sort of mode in this game, but after a while I realized that this was actually a great idea because as the mode gives it counters the frustrating and exacting nature of the other modes. (darkstation.com)