The antonyms for the word "most unabated" would be "least restrained" or "mildly constrained." Unabated means something that continues with full intensity or without any reduction in strength or violence. Therefore, antonyms for this word would imply terms that show a reduction in the level of intensity. Some other possible antonyms could be "lessened," "diminished," "subdued," "quelled," "controlled," or "calmed." These antonyms for "most unabated" convey the opposite meaning of an uncontrolled or fiery nature and hint at a state of doused emotions or subdued intensity.