Wrong
Incorrect, wrong, fallacious, flawed, inaccurate, imprecise, unfounded, fictitious, fabricated, made up, unreal, forged, spurious, deceptive, untrue, erroneous, faulty, distorted, inexact, invalid, untruthful, concocted, invented, trumped up, counterfeit, fraudulent, and misleading.
Faithless
Faithless, disloyal, inconstant, treacherous, perfidious, Janus-faced, double-crossing, deceiving, dishonourable, duplicitous, untrustworthy, untruthful, mendacious, two-timing, hollow-hearted, unfaithful, untrue, false-hearted, traitorous, two-faced, double-dealing, deceitful, deceptive, dishonest, hypocritical, unreliable, lying, cheating, back-stabbing, and double-faced.
Example Sentences of False
The news report was completely false.
He gave a false statement yesterday.
They believed the false rumors quickly.
Her claims were proven false immediately.