Falsy is an adjective commonly used to describe something that is untrue or deceptive. However, there are several synonyms that can be employed to convey a similar meaning. One alternative is "deceptive", which denotes something deliberately misleading or causing someone to believe in a falsehood. Another option is "fallacious", which refers to a mistaken belief or deceptive argument. Similarly, "untrue" describes something that lacks accuracy or is not in accordance with the facts. Additionally, "misleading" highlights the intention to misguide or lead astray. Other synonyms include "incorrect", "unreliable" or "untruthful", denoting the absence of truth or accuracy. All of these words serve as effective substitutes for the term "falsy" in various contexts.