fiendishly
fiend·ish·ly/ˈfiːndɪʃli/adverb
fiendishly is spelled F-I-E-N-D-I-S-H-L-Y: 10 letters and 3 syllables (fiend·ish·ly). It appears about once in every 9 million words in written English, the 91,522nd most frequent word form (wordfreq, 2021 data). As an adverb, fiendishly means “In a fiendish manner; evilly, wickedly” (English Wiktionary, September 2026).
How many letters and syllables are in fiendishly?
| Letters | 10: F-I-E-N-D-I-S-H-L-Y |
|---|---|
| Syllables | 3: fiend·ish·ly |
| In writing | about once in every 9 million words; the 91,522nd most frequent word form |
| Wrong spellings searched | none measured in search |
Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How common is fiendishly?
Fiendishly appears about once in every 9 million words in written English, the 91,522nd most frequent word form in the list.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How do you pronounce fiendishly?
- US /ˈfiːndɪʃli/
Fiendishly has 3 syllables, split fiend·ish·ly in writing.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: En-au-fiendishly.ogg, Wikimedia Commons (author and licence on each file's page).
Forms of fiendishly
- more fiendishly comparative
- most fiendishly superlative
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
What does fiendishly mean?
The meanings the English Wiktionary records, quoted as written there (source below).
adverb
- 1
In a fiendish manner; evilly, wickedly.
- 2
Extremely, very in harsh or negative contexts.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).
Fiendishly in Spanish, French, German and Portuguese
In the sense in a fiendish manner:
| Language | Words |
|---|---|
| French | diablement |
| Spanish | diabólicamente |
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.
Where does fiendishly come from?
From fiendish + -ly.
Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).