1 burning, flaming, blazing, hot, red-hot, white-hot, overheated; afire, on fire, in flames, ablaze:
Fiery lava burst from the volcano.
2 glowing, red, incandescent, brilliant, luminous, glaring, gleaming, radiant; aglow, afire:
We watched the fiery sunset fade into azure hues.
3 ardent, eager, spirited, passionate, excited, excitable, peppery, irascible, touchy, irritable, edgy, hotheaded, fierce:
I had best not be late as my boss has a fiery temper.