1
faithful
1
fanatic(adjective, keen, passionate, enthusiastic, ardent)
1
fanatical(adjective, keen, passionate, enthusiastic, excited)
1
fireball(adjective, keen, passionate, enthusiastic, ardent)
1
flagrant
1
flashing(adjective, hot, white, glowing, fiery)
1
frenetic(adjective, keen, passionate, enthusiastic, ardent)
1
frisky(adjective, vigorous)
1
full-blooded(adjective, vigorous)
1
fuming
1
gleaming(adjective, hot, white, glowing, fiery)
1
gung-ho(adjective, keen, passionate, enthusiastic, ardent)
1
guttering
1
hot-headed(adjective, intense, violent, hot, fierce)
1
igneous(adjective, intense, violent, hot, fierce)
1
ignescent
1
illuminated(adjective, hot, white, glowing, fiery)
1
in earnest
1
industrious(adjective, vigorous)
1
intensely interested
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APASmart Define. (2015). afire thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/afire/thesaurus/synonyms
ChicagoSmart Define. 2015. "afire thesaurus" https://smartdefine.org/afire/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, afire thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/afire/thesaurus/synonyms>.
MLASmart Define. "afire thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/afire/thesaurus/synonyms>