From The Collaborative International Dictionary of English v.0.48:
Delude \De*lude"\, v. t. [imp. & p. p. Deluded; p. pr. & vb.
n. Deluding.] [L. deludere, delusum; de- + ludere to play,
make sport of, mock. See Ludicrous.]
1. To lead from truth or into error; to mislead the mind or
judgment of; to beguile; to impose on; to dupe; to make a
fool of.
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To delude the nation by an airy phantom. --Burke.
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2. To frustrate or disappoint.
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It deludes thy search. --Dryden.
Syn: To mislead; deceive; beguile; cajole; cheat; dupe. See
Deceive.
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