Standard Lemma guide

fiendishly

adv · 3 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • General-American, Received-Pronunciation: /ˈfiːndɪʃli/
  • Australia: Recorded audio is listed in the source snapshot.

1

adv

Meaning 1

In a fiendish manner; evilly, wickedly.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

adv

Meaning 2

Extremely, very in harsh or negative contexts.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adverb

Meaning 3

as a devil; in an evil manner

Definition source: Princeton WordNet 3.0

Examples

  • his writing could be diabolically satiric

Meaning relationships

Synonyms: diabolically, devilishly

Antonyms: none provided

History

Etymology

Etymology tree English fiendish Middle English -ly English -ly English fiendishly From fiendish + -ly.

Across languages

Translations

12 source translations are retained for this English entry.

  • Danish: djævelsk — in a fiendish manner
  • Dutch: duivels — in a fiendish manner
  • Dutch: hels — in a fiendish manner
  • French: diablement — in a fiendish manner
  • Georgian: სასტიკად (sasṭiḳad) — in a fiendish manner
  • Hungarian: ördögien — in a fiendish manner
  • Hungarian: pokolian — in a fiendish manner
  • Hungarian: ördöngösen — in a fiendish manner
  • Italian: diabolicamente — in a fiendish manner
  • Polish: diabelsko — in a fiendish manner
  • Polish: szatańsko — in a fiendish manner
  • Spanish: diabólicamente — in a fiendish manner