Part of speech:
Aimless or irregular in motion:
Deviating from what is desired, expected, or required, especially in being disobedient or in gratifying one's own inclinations:
An abandoning of what one has believed in, as a faith, cause, or principles
Dishonesty of purpose; lack of fairness and honesty; the continuous and willful failure to fulfill one’s duties or obligation. See also good faith. Dishonesty of purpose; lack of fairness and honesty; the continuous and willful failure to fulfill one’s duties or obligation. See also good faith.
A failing or failure
Willful neglect, as of duty or principle.
An instance of being eccentrically variable or fickle.
Unfaithfulness to a sexual partner, especially a spouse.
Deliberate breach of faith; calculated violation of trust; treachery:
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
Betrayal of trust, faith, or allegiance; perfidy, disloyalty, or treason
Violation of the allegiance owed to one's sovereign or state; betrayal of one's country, specif., in the U.S. (as declared in the Constitution), consisting only in levying war against the U.S. or in giving aid and comfort to its enemies
Something false; esp., a lie
Find another word for unfaithfulness. In this page you can discover 27 synonyms, antonyms, idiomatic expressions, and related words for unfaithfulness, like: errant, unfaithful, wayward, apostasy, bad faith, defection, dereliction, disloyalty, fickleness, improbity and inconstancy.