The antonyms for the phrase "honest to god truths" can be deceitful lies, false promises, or malicious manipulations. These are the opposite of what the phrase means, which is a genuine and sincere expression of truth. The deceptive antonyms can be useful in manipulation, deception, or lying, while the honest antonyms stand for integrity, honesty, reliability, and trustworthiness. One should be careful while dealing with the former antonyms, as they can lead to distrust, conflict, and negative consequences, whereas the latter is essential for building strong relationships, mutual respect, and healthy communication. It is always better to speak the truth than to resort to deceit or manipulation, as honesty is the foundation of all human transactions.