The term "most phantasmagorical" refers to something that is highly surreal, dreamlike or imaginative. Antonyms for this word could include terms such as "realistic," "conventional," "ordinary," "mundane," and "pedestrian." These words would describe something that is not fantastical or out-of-the-ordinary, but rather is rooted in reality and conforms to societal norms. While "most phantasmagorical" brings to mind the strange and unusual, its antonyms bring to mind the comfort and familiarity of our everyday experiences. Ultimately, the choice of whether to embrace the fantastical or the familiar is up to the individual, providing them with a broad spectrum of experiences to choose from.