Synonyms of illusions

1 Syllable
ghost, myth, trip
2 Syllables
rainbow, fancy, phantasm, seeming, bubble, error, daydream
3 Syllables
delusion, image, deception, mockery, invention, mirage, semblance, fallacy, chimera, confusion, misbelief, idolism, fantasy
4 Syllables
make-believe, apparition, misconception, hocus-pocus, misimpression, paramnesia
5 Syllables
hallucination, misapprehension