adj. fier·i·er,
fier·i·est 1. a. Consisting of or containing fire.
b. Burning or glowing.
c. Using or effected with fire.
d. Easily ignited; flammable.
2. Having the color of fire; brightly red: fiery hair; a fiery sunset.
3. a. Torridly hot.
b. Feverishly hot and flushed: fiery cheeks.
c. Being in an inflamed, usually painful condition: a fiery boil.
4. a. Easily excited or emotionally volatile; tempestuous: a fiery temper.
b. Charged with emotion; spirited: a fiery denunciation.