Need another word that means the same as “unfaithful”? Find 21 synonyms and 30 related words for “unfaithful” in this overview.
The synonyms of “Unfaithful” are: faithless, traitorous, treasonable, treasonous, adulterous, fickle, untrue, inconstant, flighty, disloyal, treacherous, untrustworthy, unreliable, undependable, false, perfidious, insincere, two-faced, janus-faced, double-dealing, deceitful
According to the Oxford Dictionary of English, “unfaithful” as an adjective can have the following definitions:
| adulterous | Of or involving adultery. An adulterous affair. |
| deceitful | Intended to deceive. She was a deceitful scheming little thing. |
| disloyal | Failing to be loyal to a person, country, or organization to which one has obligations. She was accused of being disloyal to the government. |
| double-dealing | Marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another- Israel Zangwill. |
| faithless | Disloyal, especially to a spouse or partner. The faithless Benedict Arnold. |
| false | Used in names of plants animals and gems that superficially resemble the thing properly so called e g false oat. The trunk had a false bottom. |
| fickle | Changing frequently, especially as regards one’s loyalties or affections. Fickle weather. |
| flighty | Guided by whim and fancy. Her mother was a flighty Southern belle. |
| inconstant | Likely to change frequently often without apparent or cogent reason; variable. The most inconstant man in the world. |
| insincere | Not expressing genuine feelings. She flashed him an insincere smile. |
| janus-faced | Having or concerned with polarities or contrasts. |
| perfidious | Deceitful and untrustworthy. A perfidious lover. |
| traitorous | Relating to or characteristic of a traitor; treacherous. A lying traitorous insurrectionist. |
| treacherous | Tending to betray especially having a treacherous character as attributed to the Carthaginians by the Romans. Treacherous winding roads. |
| treasonable | (of an offence or offender) punishable as treason or as committing treason. There was no evidence of treasonable activity. |
| treasonous | Involving or guilty of the betrayal of someone or something. It seems almost treasonous to criticize the film. |
| two-faced | Marked by deliberate deceptiveness especially by pretending one set of feelings and acting under the influence of another- Israel Zangwill. |
| undependable | Liable to be erroneous or misleading. An undependable assistant. |
| unreliable | Not worthy of reliance or trust. An unreliable trestle. |
| untrue | Not true to an obligation or trust-Bruno Laske. Off level floors and untrue doors and windows. |
| untrustworthy | Not worthy of trust or belief. Thomas considered her to be devious and untrustworthy. |
| apostate | A disloyal person who betrays or deserts his cause or religion or political party or friend etc. An apostate Roman Catholic. |
| betray | Be sexually unfaithful to one’s partner in marriage. The spy betrayed his country. |
| betrayal | An act of deliberate betrayal. The betrayal by the king by his daughter. |
| cheat | An act of cheating a fraud or deception. She cheats on her husband. |
| cheating | Not faithful to a spouse or lover. |
| deceit | The action or practice of deceiving someone by concealing or misrepresenting the truth. Hypocrisy and deceit were anathema to her. |
| deceive | (of a thing) give (someone) a mistaken impression. He had deceived her with another woman. |
| dishonesty | The quality of being dishonest. The dismissal of thirty civil servants for dishonesty and misconduct. |
| disloyal | (of a remark or thought) demonstrating a lack of loyalty. She was accused of being disloyal to the government. |
| faithless | Having the character of, or characteristic of, a traitor. Her faithless lover. |
| fickle | Marked by erratic changeableness in affections or attachments. Celebs trying to appeal to an increasingly fickle public. |
| inconstant | Likely to change frequently often without apparent or cogent reason; variable. Inconstant affections. |
| infidelity | Disbelief in a particular religion, especially Christianity. Her infidelity continued after her marriage. |
| insurgent | A person who takes part in an armed rebellion against the constituted authority (especially in the hope of improving conditions. Alleged links with insurgent groups. |
| mutinous | Wilful or disobedient. Antoinette looked mutinous but she obeyed. |
| perfidious | Tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans. The perfidious Judas. |
| rebel | A person who takes part in an armed rebellion against the constituted authority especially in the hope of improving conditions. Respect did not prevent children from rebelling against their parents. |
| rebellious | Discontented as toward authority. Temperamentally rebellious. |
| renegade | Become a renegade. A renegade monk. |
| traitor | A person who says one thing and does another. He was a traitor to his own class. |
| traitorous | Having the character of, or characteristic of, a traitor. When his traitorous actions were discovered he was imprisoned. |
| treacherous | Tending to betray especially having a treacherous character as attributed to the Carthaginians by the Romans. Treacherous winding roads. |
| treasonable | (of an offence or offender) punishable as treason or as committing treason. There was no evidence of treasonable activity. |
| trick | A period of work or duty. She thought Elaine was playing some trick on her. |
| turncoat | A disloyal person who betrays or deserts his cause or religion or political party or friend etc. They denounced him as a turncoat. |
| unbelief | Lack of religious belief; an absence of faith. The darkness of unbelief. |
| unreliable | Not able to be relied upon. An unreliable trestle. |
| untrue | (used especially of persons) not dependable in devotion or affection; unfaithful. Unfortunately the statement was simply untrue. |
| untrustworthy | Not able to be relied on as honest or truthful. An untrustworthy person. |
| volatile | A volatile substance. Volatile solvents. |
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