Antonyms of adj unfaithful

4 senses of unfaithful

Sense 1
unfaithful (vs. faithful) -- (not true to duty or obligation or promises; "an unfaithful lover")

faithful (vs. unfaithful) -- (steadfast in affection or allegiance; "years of faithful service"; "faithful employees"; "we do not doubt that England has a faithful patriot in the Lord Chancellor")
        => firm, loyal, truehearted, fast (prenominal) -- (unwavering in devotion to friend or vow or cause; "a firm ally"; "loyal supporters"; "the true-hearted soldier...of Tippecanoe"- Campaign song for William Henry Harrison; "fast friends")
        => true -- (devoted (sometimes fanatically) to a cause or concept or truth; "true believers bonded together against all who disagreed with them")

Sense 2
unfaithful (vs. faithful) -- (having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend; "her husband was unfaithful")

faithful (vs. unfaithful) -- (not having sexual relations with anyone except your husband or wife, or your boyfriend or girlfriend; "he remained faithful to his wife")
        => true to (predicate) -- (sexually faithful; "she was true to her significant other")

Sense 3
faithless, traitorous, unfaithful, treasonable, treasonous -- (having the character of, or characteristic of, a traitor; "the faithless Benedict Arnold"; "a lying traitorous insurrectionist")

INDIRECT (VIA disloyal) -> loyal -- (steadfast in allegiance or duty; "loyal subjects"; "loyal friends stood by him")

Sense 4
unfaithful -- (not trustworthy; "an unfaithful reproduction")

INDIRECT (VIA inaccurate) -> accurate -- (conforming exactly or almost exactly to fact or to a standard or performing with total accuracy; "an accurate reproduction"; "the accounting was accurate"; "accurate measurements"; "an accurate scale")

Similarity of adj unfaithful

4 senses of unfaithful

Sense 1
unfaithful (vs. faithful) -- (not true to duty or obligation or promises; "an unfaithful lover")
       => apostate -- (not faithful to religion or party or cause)
       => punic, perfidious, treacherous -- (tending to betray; especially having a treacherous character as attributed to the Carthaginians by the Romans; "Punic faith"; "the perfidious Judas"; "the fiercest and most treacherous of foes"; "treacherous intrigues")
       => untrue -- (not true to an obligation or trust; "is untrue to his highest opportunity and duty"-Bruno Laske)
          Also See-> inconstant#1; untrustworthy#1, untrusty#1

Sense 2
unfaithful (vs. faithful) -- (having sexual relations with someone other than your husband or wife, or your boyfriend or girlfriend; "her husband was unfaithful")
       => adulterous, cheating (prenominal), two-timing (prenominal) -- (not faithful to a spouse or lover; "adulterous husbands and wives"; "a two-timing boyfriend")

Sense 3
faithless, traitorous, unfaithful, treasonable, treasonous -- (having the character of, or characteristic of, a traitor; "the faithless Benedict Arnold"; "a lying traitorous insurrectionist")
       => disloyal (vs. loyal) -- (deserting your allegiance or duty to leader or cause or principle; "disloyal aides revealed his indiscretions to the papers")

Sense 4
unfaithful -- (not trustworthy; "an unfaithful reproduction")
       => inaccurate (vs. accurate) -- (not exact; "an inaccurate translation"; "the thermometer is inaccurate")