Antonyms for the word "heart-to-hearts" are discussions, debates, arguments, quarrels, misunderstandings, uncertainties, and conflicts. While heart-to-hearts are characterized by sincere communication, openness, and candidness, antonyms take on the opposite traits, such as dishonesty, closed-mindedness, and hostility. Instead of being grounded by mutual understanding, antonyms represent a breakdown in communication, where parties talk past each other, rather than with each other. Antonyms are certainly not conducive to fostering healthy relationships, let alone producing positive outcomes. So, while heart-to-hearts may not be easy to initiate, they are invaluable in terms of building trust, deepening connections, and finding common ground.