Synonyms of blue-sky

1 Syllable
fake
2 Syllables
phantasm, ideal
3 Syllables
fanciful, deceitful, fictional, mistaken, apparent, dreamlike, fallacious, misleading, fictive, fantastic, phantasmal, chimeric, phantasmic, fictitious
4 Syllables
delusive, illusory, ostensible, chimerical, delusory
5 Syllables
phantasmagoric, imaginary
6 Syllables
hallucinatory, imaginative