Monster
Monster noun - A mean, evil, or unprincipled person.
Usage example: the guards at the concentration camps were monsters who enjoyed seeing their victims suffer
Perp and monster are semantically related. In some cases you can use "Perp" instead a noun "Monster".
Nearby Words: monstrous, monstrously
Perp
Mutual synonyms
Both words in one sentence
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Monster of the Week: When the perp is more than this, you know that the UnSub in question is really, really deranged.
Source: Series / Criminal Minds
Cite this Source
Perp and Monster. (2016). Retrieved 2026, July 29, from https://thesaurus.plus/related/monster/perp
Monster & Perp. N.p., 2016. Web. 29 Jul. 2026. <https://thesaurus.plus/related/monster/perp>.
Perp or Monster. 2016. Accessed July 29, 2026. https://thesaurus.plus/related/monster/perp.
Google Ngram Viewer shows how "monster" and "perp" have occurred on timeline