Not well founded; not firm or trustworthy; erroneous.
Having the character of a traitor; disloyal
Failing to observe the terms of a vow, promise, understanding, etc., or false to allegiance or duty; faithless; disloyal
Not agreeing with a standard, rule, or measure
Not true to duty or obligation
Managing for an owner; acting as trustee
Find another word for false-hearted. In this page you can discover 11 synonyms, antonyms, idiomatic expressions, and related words for false-hearted, like: disloyal, faithless, false, perfidious, recreant, traitorous, treacherous, unfaithful, untrue, continue and trust.