"phantasm" in the noun sense
1. apparition, phantom, phantasm, phantasma, fantasm, specter, spectre
a ghostly appearing figure
"we were unprepared for the apparition that confronted us"
2. apparition, phantom, phantasm, phantasma, fantasm, shadow
something existing in perception only
"a ghostly apparition at midnight"
Source: WordNet® (An amazing lexical database of English)
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