unrealistic (adj.)

• airy
• autistic
• delusional
• delusive
• delusory
• fanciful
• idealistic
• illogical
• illusory
• imaginary
• immaterial
• impractical
• inaccurate
• otherworldly
• poetic
• quixotic
• romantic
• starry-eyed
• transcendental
• transmundane
• unauthentic
• unnatural
• unreal
• unrealizable
• unreasonable
• unrepresentative
• unsubstantial
• unworkable
• visionary