Twofaced has a negative connotation, and it can be tough to find its antonyms. One antonym could be honest, which means being truthful and sincere in one's words and actions. Another antonym could be straightforward, which means being direct and open with one's intentions or opinions. Trustworthy is another antonym for twofaced, which means being reliable and dependable. Genuine is also an antonym, which means being authentic and not fake. Lastly, sincere can also be an antonym, which means being genuine and honest in one's feelings and actions. These are some antonyms for the word twofaced that convey positive traits and characteristics.