different between deceitful vs delusive

English

deceit +? -ful

deceitful (comparative more deceitful, superlative most deceitful)

Deliberately misleading or cheating.
- c. 1590, William Shakespeare, The Two Gentlemen of Verona, [Act II, scene vii]:
  All the?e are ?eruants to deceitfull men.
Deceptive, two-faced.

delude +? -ive

delusive (comparative more delusive, superlative most delusive)

Producing delusions.
Delusional.
Inappropriate to reality; forming part of a delusion.
- 1847, Emily Brontë, Wuthering Heights, chapter XX:
  The poor thing was finally got off, with several delusive assurances that his absence should be short: that Mr. Edgar and Cathy would visit him, and other promises, equally ill-founded, which I invented and reiterated at intervals throughout the way.

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