Fierce and Keen

Fierce

Fierce adjective - Extreme in degree, power, or effect.
Usage example: a fierce wind made the frigid temperatures seem even worse

Keen is a synonym for fierce in intense topic. In some cases you can use "Keen" instead an adjective "Fierce".

Nearby Words: fiercely, fierceness

Keen

Keen adjective - Extreme in degree, power, or effect.
Usage example: movies gave him keen enjoyment like nothing else

Fierce is a synonym for keen in intense topic. You can use "Fierce" instead an adjective "Keen", if it concerns topics such as eager, earnest, enthusiastic.

Nearby Words: keenness, keenly
Cite this Source
Keen and Fierce. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/fierce/keen
Fierce & Keen. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/fierce/keen>.
Keen or Fierce. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/fierce/keen.
Google Ngram Viewer shows how "fierce" and "keen" have occurred on timeline