The antonyms for the word "be troths" are "divorces," "separates," "splits," "breaks up," and "dissolves." These words reflect the opposite of being promised to someone or entering into a formal engagement. Be trothing involves making a solemn commitment to someone, but if this promise is broken or no longer relevant, then antonyms like divorces or splits can be used to describe the situation. These words are often used in the context of romantic relationships or marriages but can also be applied in other scenarios where a promise or agreement has been terminated.