Synonyms for "perfidiously" (12 found)

Ranked by relevance and common usage.

Closest matches (3)

Adverb(3 words)

dastardlydisloyallyfalse

Strong matches (3)

Adverb(3 words)

falselyjudaslyproditoriously

Related words (6)

Adverb(6 words)

ratliketraitorlytraitorouslytraitorwisetreacherouslyunfaithfully

Related word relations

OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.

2 relation types

derived from

1 entries

perfidious

related to

1 entries

perfidious

Translations

5 translations across 3 languages.

Powered by Wiktionary

German

2 entries

• heimtückisch adv (in a perfidious manner)
• treulos adv (in a perfidious manner)

Polish

1 entries

• perfidnie adv (in a perfidious manner)

Turkish

2 entries

• haince adv (in a perfidious manner)
• kalleşçe adv (in a perfidious manner)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.