fallacious (adj.)

• aberrant
• abroad
• adrift
• airy
• amiss
• antinomian
• apocryphal
• apparent
• apparitional
• askew
• autistic
• awry
• beguiling
• casuistic
• catchy
• chimeric
• contradictory
• corrupt
• deceiving
• deceptive
• defective
• delusional
• delusive
• delusory
• deviant
• disingenuous
• distorted
• dreamlike
• dreamy
• dubious
• empty
• errant
• erring
• erroneous
• false
• fantastic
• faulty
• fishy
• flawed
• hallucinatory
• heretical
• heterodox
• hollow
• illogical
• illusional
• illusionary
• illusive
• illusory
• imaginary
• inauthentic
• inconclusive
• incongruous
• inconsequent
• inconsequential
• inconsistent
• insincere
• invalid
• irrational
• jesuitic
• loose
• mad
• misleading
• nonrational
• off
• ostensible
• out
• overrefined
• pantheist
• pantheistic
• peccant
• perverse
• perverted
• phantasmagoric
• phantasmal
• phantom
• plausible
• questionable
• reasonless
• seeming
• self-contradictory
• senseless
• sophistic
• sophistical
• specious
• spectral
• straying
• supposititious
• tricksy
• tricky
• unaccepted
• unauthentic
• unconnected
• unfounded
• unorthodox
• unproved
• unreal
• unreasonable
• unscientific
• unsound
• unsubstantial
• untrue
• visionary
• wide
• wrong