Find Antonyms
unfaithfulness Antonyms
Opposite of unfaithfulness
Because the opposite of unfaithfulness shifts with each meaning, the 12 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
• noun (Context 1)
The state or act of engaging in sexual or romantic relations with someone other than one's spouse or committed partner; infidelity.
Usage Example
"Their twenty-year marriage ultimately ended due to his repeated faithfulness."
Strongest
faithfulness
fidelity
Strong
monogamy
constancy
devotion
• noun (Context 2)
A breach of trust, duty, allegiance, or commitment to a person, cause, or principle; disloyalty.
Usage Example
"The prophet warned that the nation's faithfulness to its sacred covenant would bring severe consequences."
Strongest
faithfulness
loyalty
allegiance
Strong
fealty
steadfastness
• noun (Context 3)
A lack of accuracy or close adherence to an original text, fact, or standard.
Usage Example
"Critics faulted the cinematic adaptation for its fidelity to the historical record."
Strongest
fidelity
accuracy
Strong
precision
exactness
Similar words to unfaithfulness
Words similar to unfaithfulness shift depending on context. Common synonyms include:
infidelity
disloyalty
adultery
betrayal
inaccuracy
cheating
perfidy
inexactness
• Nearby Words
Cite this Entry
Wordmom. (2026). Antonyms for Unfaithfulness. In Wordmom Thesaurus. Retrieved Nov 3, 2026, from https://wordmom.com/antonyms/unfaithfulness