If your story includes an antagonist who is evil in their actions, in this post weโve included 10 words to describe a demonic person.
1. Fiendish
Definition
Aย personย who delights in being cruel or horrible.
Examples
โHisย fiendishย ways always scared those close to him, and no one could ignore the way he smiled when others cried.โ
โShe had aย fiendishย smile, and this always signaled a new plot brewing in her mind. Whenever she looked slightly happy, bad things started to happen.โ
How it Adds Description
The word โfiendishโ portrays the joy people get out of seeing or doing cruel things, and this is a perfect adjective to describe a demonic person. Typically, demonic characters cause chaos and delight in negative happenings. Therefore, โfiendishโ can portray your characterโs true demonic side to your reader.
2. Malevolent
Definition
Someone of something thatย deliberatelyย causes harm or commits evil acts.
Examples
โEveryone in the room turned to see theย malevolentย look on his face, and they all knew nothing good would follow.โ
โHerย malevolentย gaze penetrated through the window, and the couple inside could feel her watching.โ
How it Adds Description
Demonic characters are closely associated with evil, and the word โmalevolentโ captures this truly horrible link. โMalevolentโ is a stronger adjective than others on this list, and it is a great option to use for intense demonic behavior. It is also associated withย horror, so itโs a great way to build suspense and scare your readers.
3. Manic
Definition
Someone thatโs moreย excitableย or anxious than usual.
Examples
โHis eyes turned black and he becameย manic, and this made the younger children cry out in fear.โ
โThey wereย manic, and it was obvious that the demonic spirit was slowly taking over their minds.โ
How it Adds Description
If you want to portray your demonic characterโs actions, the adjective โmanicโ provides a very clear image. While this word isnโt a synonym for demonic, it describes hyper-energetic behavior which is often displayed in pop culture demonic characters. This is a great word to experiment with if you want to provide a clear description of the way your demonic character moves or acts.
4. Sinister
Definition
Something or someone who seemsย harmfulย or evil.
Examples
โHe had aย sinisterย mind, there was no doubt about it. However, he hid his evil thoughts with false smiles and pleasant small talk.โ
โThey glanced around and spotted hisย sinisterย stare, and suddenly a chill washed over them.โ
How it Adds Description
The word โsinisterโ describes someone that seems evil, and itโs a good choice for describing a character who hasnโt been confirmed as demonic yet. โSinisterโ can also help to foreshadow future plot points, such as hinting at demonic personalities or places.
5. Corrupt
Definition
Someone ofย somethingย who is morally wrong or dishonest.
Examples
โHe wasย corruptย in his body and mind, there was no hope of him becoming the boy he used to be ever again.โ
โThe nation was healing, but she wasย corrupt,ย and on a mission to remove the peace again.โ
How it Adds Description
If someone is demonic, they are likely not acting morally. The word โcorruptโ shows a character’s lack of morality and honesty. In addition, โcorruptโ can point to characters who have been possessed by a demonic spirit. You can describe them as being โcorruptedโ by the evil presence, thus explaining their actions.
6. Wild
Definition
Someone who acts in anย uncontrolledย and disorderly manner.
Examples
โHe becameย wildย overnight, and after the incident no one even recognized him anymore. It was frightening to watch.โ
โShe wasย wild, and would not stop screeching in a language no one understood.โ
How it Adds Description
If youโre aiming to describe how a demonic character is acting, โwildโ could be the adjective for you. โWildโ is often associated with animals, thus you can imply your character is no longer acting human. Also, it paints a vivid image of someone thatโs no longer trying to fit in with societyโs conventions โ ideal if theyโve just been possessed.
7. Cursed
Definition
Someone orย somethingย suffering as a result of actions, bad luck, or a curse.
Examples
โFrom the moment he was born, his mother knew he wasย cursed. However, hisย cursedย behavior only started to show as he reached adulthood.โ
โShe looked in the mirror and aย cursedย reflection stared back, making her jolt in shock.โ
How it Adds Description
The word โcursedโ can signal that one character is afflicted by demonic thoughts, and this can explain why their actions are becoming negative or unruly. โCursedโ also signals that the character doesnโt wish to be demonic and that theyโre struggling. This is a good term to use if you want your reader to feel pity for the character, making your demonic character multidimensional instead of a flat horror trope.
8. Unearthly
Definition
Someone who is actingย unnaturalย or very strange.
Examples
โThere was no doubt he was a demon, and hisย unearthlyย stance was the tell-tale sign that he wasnโt part of this world.โ
โShe was fighting hard to ignore his presence, but he wasย unearthlyย and broke her down in seconds.โ
How it Adds Description
If your demonic character isnโt from Earth as we know it, the term โunearthlyโ can help you describe their unusual actions. The word โunearthlyโ is also a good adjective for building fear, as it paints the demon as an outsider who wants to disrupt the status quo.
9. Hideous
Definition
Someone or something thatโs very unattractive orย ugly.
Examples
โWhenever he showed his true demonic form he wasย hideous.โ
โHe wasย hideousย through and through, and it was her love for him that scared her most.โ
How it Adds Description
A demonic character might look scary, evil, or different from most humans. If you want to portray your characterโs unappealing physique, the adjective โhideousโ is the one for you. This is a great word to set your character up as an outsider, too.
10. Petrifying
Definition
Someone thatย stunsย or stops someone else with fear.
Examples
โShe awoke to hisย petrifyingย face, the night visits were starting again.โ
โHe kept running, but herย petrifyingย figure loomed close behind him.โ
How it Adds Description
Demons and demonic characters are often scary, and the adjective โpetrifyingโ will ensure your reader feels fear. This word can help to build suspense, especially when used with a slow buildup of description surrounding the demonic character.

