Unintermittingly is an adverb that describes the action of something happening without any break or pauses. There are several synonyms for this word that you can use in your conversation or writing: continuously, incessantly, unremittingly, persistently, uninterruptedly, unceasingly, unendingly, and steady. Each of these synonyms has a slightly different connotation and context of usage, but they all mean something that is happening in a consistent and uninterrupted manner. For example, you could say, "The rain fell continuously for three straight days," or "The sound of the clock ticking was incessant and unbearable." Using these synonyms can add variety and depth to your language and make your writing or speech more engaging.