Synonyms of the word

unfaithful

• adj. Not having religious faith.
• adj. Not keeping good faith; disloyal; not faithful.
• adj. Not honest or upright.
• adj. (translation studies) which doesn't faithfully render the meaning of the source language; incorrect.
• adj. Adulterous.

adulterous

• adj. Of, or characterized by adultery.

apostate

• adj. Guilty of apostasy.
• n. A person who has renounced a religion or faith.
• n. (Roman Catholicism) One who, after having received sacred orders, renounces his clerical profession.

cheating

• v. present participle of cheat.
• n. An act of deception, fraud, trickery, imposture, or imposition.
• n. (cinematography) The arrangement of people or items in a film so as to give the (false) impression that…
• adj. Unsporting or underhand.
• adj. Unfaithful or adulterous.

disloyal

• adj. not loyal, unloyal, without loyalty; faithless, traitorous.

faithless

• adj. Lacking faith; lacking belief in something.
• adj. Not believing in God, religion, or a comparable ideology.
• adj. Unfaithful; not of true fidelity; inconstant, as a husband or a wife.
• adj. Not observant of promises or covenants.
• adj. Not true to allegiance, duty, or vows; perfidious; treacherous; disloyal.
• adj. Serving to disappoint or deceive; delusive; unsatisfying.

inaccurate

• adj. Mistaken or incorrect; not accurate.

inconstant

• adj. Not constant; wavering.

perfidious

• adj. Of, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance.

traitorous

• adj. Characteristic of a traitor; disloyal.
• adj. (law) Constituting treason; treasonable or seditious.

treacherous

• adj. Exhibiting treachery.
• adj. Deceitful; inclined to betray.
• adj. Unreliable; dangerous.

treasonable

• adj. involving or constituting treason.

treasonous

• adj. Like or in the way of treason.

two-timing

• v. present participle of two-time.
• adj. Who has two-timed another person.
• n. The practice of being sexually unfaithful.

untrue

• adj. False; not true.

untrustworthy

• adj. Not deserving of trust; unreliable.

untrusty

• adj. Not trusty.