Adjacent Words

Unfaithful definitions

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Webster's 1828 Dictionary

UNFA'ITHFUL, a.
1. Not observant of promises, vows, allegiance or duty; violating trust or confidence; treacherous; perfidious; as an unfaithful subject; an unfaithful husband or wife; an unfaithful servant; an unfaithful bailee or agent.
2. Not performing the proper duty.
My feet through wine unfaithful to their weight -
3. Impious; infidel.
4. Negligent of duty; as an unfaithful workman.

WordNet (r) 3.0 (2005)

adj
1: not true to duty or obligation or promises; "an unfaithful lover" [ant: faithful]
2: having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend; "her husband was unfaithful" [ant: faithful]
3: having the character of, or characteristic of, a traitor; "the faithless Benedict Arnold"; "a lying traitorous insurrectionist" [syn: faithless, traitorous, unfaithful, treasonable, treasonous]
4: not trustworthy; "an unfaithful reproduction"

Merriam Webster's

adjective Date: 15th century not faithful: a. not adhering to vows, allegiance, or duty ; disloyal <an unfaithful friend> b. not faithful to marriage vows <suspected her husband of being unfaithful> c. inaccurate, untrustworthy <an unfaithful copy of a document> • unfaithfully adverb • unfaithfulness noun

Oxford Reference Dictionary

adj. 1 not faithful, esp. adulterous. 2 not loyal. 3 treacherous. Derivatives: unfaithfully adv. unfaithfulness n.

Webster's 1913 Dictionary

Unfaithful Un*faith"ful, a. 1. Not faithful; not observant of promises, vows, allegiance, or duty; violating trust or confidence; treacherous; perfidious; as, an unfaithful subject; an unfaithful agent or servant. My feet, through wine, unfaithful to their weight. --Pope. His honor rooted in dishonor stood, And faith unfaithful kept him falsely true. --Tennyson. 2. Not possessing faith; infidel. [R.] --Milton. -- Un*faith"ful*ly, adv. -- Un*faith"ful*ness, n.

Collin's Cobuild Dictionary

If someone is unfaithful to their lover or to the person they are married to, they have a sexual relationship with someone else. James had been unfaithful to Christine for the entire four years they'd been together. ...her unfaithful husband. ADJ: oft ADJ to n

Soule's Dictionary of English Synonyms

a. 1. Faithless, treacherous, perfidious, unreliable, derelict, false, deceitful, disloyal, recreant, treasonable, undutiful, false-hearted, untrustworthy. 2. Negligent, careless, untrustworthy, unreliable. 3. Fickle, untrue, inconstant, changeable, faithless.

Moby Thesaurus

derelict, disaffected, disloyal, disregardful, faithless, false, fickle, inattentive, inconstant, inobservant, negligent, nonadherent, noncompliant, nonconforming, nonobservant, not true to, of bad faith, perfidious, recreant, traitorous, treacherous, trothless, uncompliant, unconforming, unloyal, unobservant, unsteadfast, untrue