Antonyms for the word "most unabating" include faltering, wavering, fluctuating, varying, and sporadic. When something is described as unabating, it means that it continues with intensity and without relenting. In contrast, faltering implies a lack of consistency or strength, while wavering suggests hesitation or uncertainty. Fluctuating implies variability or instability, and sporadic suggests irregularity or infrequency. By contrast, the antonyms of unabating imply a weakening, slowing, or irregularity of some kind. Depending on the context, choosing the right antonym for "most unabating" can help add nuance and complexity to your writing or speaking.