When it comes to antonyms for the word "most prevaricating," there are several words that come to mind. First, we have the word "honest" - which is the complete opposite of prevaricating. Honest individuals always tell the truth and are open about their thoughts and feelings. Next, we have "upfront" - a word that implies transparency and straightforwardness. Similarly, "forthright" and "candid" are also excellent antonyms for prevaricating, as they suggest that someone is speaking the truth without any intention to deceive or mislead. Lastly, "authentic" and "genuine" can also serve as antonyms for prevaricating, as they imply that someone is honest and sincere in their actions and communications.