unfaithfulness

noun

Etymology: Etymology tree English unfaithful Proto-Germanic *-in- Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Indo-European *-h₂ti Proto-Germanic *-ōną Proto-Germanic *-inōną Proto-Indo-European *-dyé- Proto-Germanic *-atjaną Proto-Indo-European *-tus Proto-Germanic *-þuz Proto-Germanic *-assuz Proto-Germanic *-inassuz Proto-West Germanic *-nassī Old English -nes Middle English -nesse English -ness English unfaithfulness From unfaithful + -ness.

1. The characteristic of being unfaithful.

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