delusive

1. Tending to delude.
2. Having the nature of a delusion; false: a delusive faith in a wonder drug.

adjective

1. Tending to deceive; of the nature of an illusion: delusory, illusive, illusory. See real/imaginary.
2. Tending to lead one into error: deceptive, delusory, fallacious, illusive, illusory, misleading. See honest/dishonest, real/imaginary.
3. Of, relating to, or in the nature of an illusion; lacking reality: chimeric, chimerical, delusory, dreamlike, hallucinatory, illusive, illusory, phantasmagoric, phantasmal, phantasmic, visionary. See real/imaginary.

Definition: deceptive
Antonyms: actual, certain, factual, honest, real, truthful

The adjective has one meaning:

Meaning #1: inappropriate to reality or facts
  Synonym: false