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Showing results for unfaithful. Search instead for unfaithfu.
Definitions

unfaithful

[uhn-feyth-fuhl] / ʌnˈfeɪθ fəl /
ADJECTIVE
disloyal, adulterous
Synonyms
STRONGEST
cheating untrue
WEAK
adulterine deceitful double-crossing faithless false false-hearted fickle foresworn inconstant incontinent moonlighting not true to of bad faith perfidious philandering recreant shifty snaky sneaking traitorous treacherous treasonable two-faced two-timing unchaste unreliable untrustworthy wicked
Antonyms
WEAK
faithful loyal trustworthy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He denied ever witnessing Epstein in the company of a minor and said he was never unfaithful to his wife.

From The Wall Street Journal • Feb. 18, 2026

"And three months ago, I made the biggest mistake of my life and I was unfaithful," he continued.

From Barron's • Feb. 11, 2026

According to Pratt, MTV was not satisfied with him merely portraying an unfaithful boyfriend.

From Los Angeles Times • Jan. 27, 2026

He said his father insisted he had not been unfaithful to his partner Jane Callaghan.

From BBC • Sep. 5, 2024

Like Enrique’s mother, Eva was leaving an unfaithful husband.

From "Enrique's Journey" by Sonia Nazario