Understand the comprehensive meaning of false. This glossary entry covers its definition, historical etymology, diverse real-world examples, and common idioms, offering a complete academic overview. Some common synonyms of false are disloyal, faithless, perfidious, traitorous, and treacherous. While all these words mean untrue to what should command one's fidelity or allegiance, false stresses the fact of failing to be true in any manner ranging from fickleness to cold treachery. FALSE definition: 1. not real, but made to look or seem real: 2. not true, but made to seem true in order to deceive…. Learn more. Find 210 different ways to say FALSE, along with antonyms, related words, and example sentences at Thesaurus.com. From Middle English false, fals, from Old English fals (“false; counterfeit; fraudulent; wrong; mistaken”), from Latin falsus (“counterfeit, false; falsehood”), perfect passive participle of fallō (“deceive”). FALSE definition: not true or correct; erroneous. See examples of false used in a sentence. If something is false, it means it is not real. A falsehood is anything said that is not true. A falsehood can also be a series of lies, told to prove something that is false itself. In logic, false is one of the truth values (with the other one being 'true'). This is written as , F or 0. [1][2] Comprehensive List of Logic Symbols. In a treacherous or faithless manner: play a person false. [Middle English fals, from Old English, counterfeit, and from Old French, false, both from Latin falsus, from past participle of fallere, to deceive.] The meaning of FALSE is not genuine. How to use false in a sentence. Synonym Discussion of False. Learn the meaning and correct usage of false. Our guide provides clear grammar rules and real-world examples from authoritative sources to help you write with confidence.