Usually means: Maliciously wicked, cruel, or hostile.
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We found 9 dictionaries that define the word fiendful:

General (9 matching dictionaries)
  1. fiendful: Wordnik
  2. fiendful: Wiktionary
  3. Fiendful: Dictionary.com
  4. Fiendful: Online Plain Text English Dictionary
  5. fiendful: Webster's Revised Unabridged, 1913 Edition
  6. Fiendful: AllWords.com Multi-Lingual Dictionary
  7. fiendful: Webster's 1828 Dictionary
  8. fiendful: FreeDictionary.org
  9. Fiendful: TheFreeDictionary.com

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Definitions from Wiktionary (fiendful)

▸ adjective:  Full of fiendish arts or spirit.

Similar:
fiendish, frightful, devil-ridden, menaceful, devilish, spleenful, deviceful, horrorful, fanatic, flameful, more...

Opposite:
angelic, benevolent, good-hearted, kind-hearted

Types:
diabolical, demonic, evil, fiendish, hellish, infernal, satanic, more...

▸ Words similar to fiendful

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▸ Popular nouns described by fiendful

▸ Words that often appear near fiendful

▸ Rhymes of fiendful

▸ Invented words related to fiendful

Similar:
fiendish, frightful, devil-ridden, menaceful, devilish, spleenful, deviceful, horrorful, fanatic, flameful, more...

Opposite:
angelic, benevolent, good-hearted, kind-hearted

Types:
diabolical, demonic, evil, fiendish, hellish, infernal, satanic, more...



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