illusory (adj.)
- aberrant
- abroad
- adrift
- airy
- amiss
- apparent
- apparitional
- askew
- autistic
- awry
- beguiling
- bewitching
- catchy
- charming
- chimeric
- chimerical
- corrupt
- deceiving
- deceptive
- defective
- delusional
- delusive
- delusory
- deviant
- distorted
- dreamlike
- dreamy
- dubious
- enchanting
- entrancing
- errant
- erring
- erroneous
- ethereal
- fallacious
- false
- fancied
- fanciful
- fantastic
- fascinating
- fatuous
- faulty
- fictional
- fictive
- fishy
- flawed
- gaseous
- glamorous
- hallucinatory
- heretical
- heterodox
- illogical
- illusional
- illusionary
- illusive
- imaginary
- imagined
- immaterial
- misleading
- mistaken
- nonexistent
- notional
- off
- ostensible
- out
- peccant
- perverse
- perverted
- phantasmagoric
- phantasmal
- phantom
- questionable
- rarefied
- seeming
- self-contradictory
- shadowy
- specious
- spectral
- spellbinding
- spirituous
- straying
- subtle
- supposititious
- tenuous
- tricksy
- tricky
- unfounded
- unorthodox
- unproved
- unreal
- unrealistic
- unsubstantial
- untrue
- vaporous
- visional
- visionary
- wide
- windy
- witching
- wrong
