IPA: /ˌfæn.tæz.məˈɡɔː.ri.ə/
KK: /fænˌtæzməˈɡɔriə/
A series of changing images or scenes that create a dream-like or surreal effect, often seen in art or imagination.
The film was a phantasmagoria of colors and shapes that captivated the audience.
Phantasmagoria → It is formed from "phantasma" (from Greek *phantasma*, meaning an apparition or ghost) and "agoria" (from Greek *agoreuein*, meaning to speak in public or to assemble). The word describes a series of shifting images or illusions, often resembling a ghostly display.
Imagine a series of ghostly images or apparitions ('phantasma') that come together in a public display ('agoria') — that's what phantasmagoria means.
No commonly confused words.