noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   The characteristic of being unfaithful. countable, uncountable

   "For even the enchantresses Circe and Medea could not, by their black arts, prevent the unfaithfulness of Odysseus and Jason."

2. 2
   the quality of being unfaithful wordnet

Synonyms

All synonyms

infidelityinfidelityadulterous affairadulteryaffairamour

Antonyms

All antonyms

faithfulnessfidelityloyalty

Example

More examples

"He chided her for her unfaithfulness."

Etymology

From unfaithful + -ness.

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