phantom (n.)
- air
- airy
- apparent
- apparition
- appearance
- banshee
- bogey
- bogeyman
- brainchild
- bubble
- bugaboo
- bugbear
- chimaera
- chimera
- control
- delirium
- delusion
- dybbuk
- ether
- fancy
- fantasy
- fiction
- figment
- figure
- form
- ghost
- ghoul
- guide
- hallucination
- hant
- haunt
- hobgoblin
- horror
- illusion
- image
- imagery
- imaginary
- imagination
- immateriality
- imponderable
- incubus
- intangible
- invention
- larva
- maggot
- make-believe
- manes
- materialization
- mirage
- mist
- monster
- myth
- nightmare
- occult
- ogre
- ogress
- oni
- phantasm
- phantasma
- phantasmagoria
- phenomenon
- poltergeist
- presence
- psychic
- revenant
- romance
- scarecrow
- scarer
- shade
- shadow
- shape
- smoke
- specter
- spectrum
- spirit
- spiritual
- spook
- sprite
- succubus
- supernatural
- terror
- theophany
- trip
- vampire
- vapor
- vision
- visionary
- werewolf
- whim
- whimsy
- wraith
- zombie
phantom (adj.)
- air
- airy
- apparent
- apparitional
- astral
- autistic
- bodiless
- chimeric
- deceptive
- delusional
- delusive
- delusory
- disembodied
- dreamlike
- dreamy
- erroneous
- ether
- ethereal
- fallacious
- false
- fancy
- fantastic
- figure
- form
- ghostlike
- ghostly
- hant
- illusional
- illusionary
- illusive
- illusory
- imaginary
- immaterial
- impalpable
- imponderable
- incorporate
- incorporeal
- insubstantial
- intangible
- make-believe
- misleading
- mist
- nonmaterial
- nonphysical
- occult
- ostensible
- otherworldly
- phantasmagoric
- phantasmal
- psychic
- revenant
- romance
- seeming
- shadowy
- shape
- specious
- spectral
- spiritual
- supernatural
- supposititious
- terror
- transmundane
- trip
- unearthly
- unembodied
- unextended
- unfounded
- unreal
- unsubstantial
- unworldly
- visionary
- wraithlike
She was a phantom of delight
When first she gleamed upon my sight,
A lovely apparition, sent
To be a moment's ornament;
Her eyes as stars of twilight fair,
Like twilights too her dusky hair,
But all things else about her drawn
From May-time and the cheerful dawn.