The word "most figmental" refers to something that is highly imaginative or unreal. Antonyms for this term would include words that describe something that is grounded in reality, factual, or verifiable. Some suitable antonyms for "most figmental" might include words like factual, truthful, real, tangible, or concrete. Additionally, words like matter-of-fact, practical, pragmatic, or rational could also be considered appropriate antonyms for this term. Ultimately, the antonyms for "most figmental" represent the opposite end of the spectrum from imaginary, whimsical, or fantastical ideas and concepts.