The word "phantasmatically" refers to something that is taking place or existing in a phantasmic or imaginary way. Synonyms for this word could include, but are not limited to: surrealistically, hallucinatorily, and illusively. Other expressions that convey similar meanings are fancifully, dreamlike, unrealistically, and obsessively. The use of such words emphasizes the idea of something that is not tangible or real. Altogether, these words can help us describe a state of mind or a setting that appears to be fictional or fantastic. Using these synonyms can help writers craft a more colorful and vivid narrative.