falseness Get Printable Handwriting (false-ness) 2 syllables Learn It! Spelling Test Definition noun. the quality or state of being false; the act or fact of violating the trust or confidence of another Example Sentence The falseness of the remark is clear. OR Her friend's falseness upset her. Synonyms error; falsehood; untruth; betrayal Antonyms truth; loyalty Share with your friends: