Fiend
Fiend noun - A mean, evil, or unprincipled person.
Usage example: even the utter horror of the terrorist attack did not deter some fiends from going on a looting spree
Monster is a synonym for fiend in brute topic. In some cases you can use "Monster" instead the word "Fiend" as a noun or an adjective, when it comes to topics like kind, degenerate, reanimated corpse, evil spirit. popular alternative
Nearby Word: fiendish
Monster
Monster noun - A strange or horrible and often frightening creature.
Usage example: both children insisted that their parents check under the bed for monsters every night
Fiend is a synonym for monster in brute topic. You can use "Fiend" instead the word "Monster" as a noun or an adjective, if it concerns topics such as kind, degenerate, reanimated corpse, evil spirit. popular alternative
Nearby Words: monstrous, monstrously
Mutual synonyms
How words are described
Both words in one sentence
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Monster Manual: nalfeshnee (Type IV) demon, drow, gorgon, hell hound, salt mephit, skeleton, wraith, half fiend, lich, lycanthrope in animal form.
Source: Red Eyes, Take Warning -
Boring but Practical: The Brute is the most straightforward monster, being an Almighty Idiot of pure physicality instead of some complex stalker with fancy abilities like the Hunter and the Fiend.
Source: Video Game / Monstrum -
GX, Professor Kabayama is a rather good chef, but the ace monster in his deck is an evil one: a Fiend-Type Monster called Curry Majin Roux.
Source: Evil Chef
Cite this Source
Monster and Fiend. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/fiend/monster
Fiend & Monster. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/fiend/monster>.
Monster or Fiend. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/fiend/monster.
Google Ngram Viewer shows how "fiend" and "monster" have occurred on timeline