'Fieriness' definitions:

Definition of 'fieriness'

From: WordNet
noun
The heat or the color of fire [syn: fieriness, red heat]
noun
A passionate and quick-tempered nature

Definition of 'Fieriness'

From: GCIDE
  • Fieriness \Fi"er*i*ness\, n. The quality of being fiery; heat; acrimony; irritability; as, a fieriness of temper. --Addison. [1913 Webster]