Most impugning is a phrase that means casting the greatest doubt or suspicion on something. Antonyms for most impugning could be words like credible, trustworthy, or dependable. These words connote reliability and confidence in a particular subject or situation. An antonym for most impugning could also be optimistic or positive, suggesting an absence of doubt or negativity. Other antonyms for most impugning include approving, supportive, or favorable, highlighting the opposite meaning of questioning, criticizing, or disapproving. Overall, antonyms for most impugning emphasize positivity, trust, and unwavering belief.