Synonyms of apparitional

2 Syllables
phantom, eerie, haunted, scary, ghostlier, spooky, spectral, ghostly
3 Syllables
vampiric, eidolic, notional, spiritual, unbodied, shadowy, dreamed-up, phantasmal
4 Syllables
spiritlike, illusory, nonphysical, uncorporal
5 Syllables
supernatural, imaginary