Antonyms of adj truehearted

1 sense of truehearted

Sense 1
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")

INDIRECT (VIA faithful) -> unfaithful -- (not true to duty or obligation or promises; "an unfaithful lover")

Similarity of adj truehearted

1 sense of truehearted

Sense 1
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")
       => 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")