words that I love #3

de·lu·sion  (d-lzhn)

n.

1.

a. The act or process of deluding.

b. The state of being deluded.

2. A false belief or opinion: labored under the delusion that success was at hand.

3. Psychiatry A false belief strongly held in spite of invalidating evidence, especially as a symptom of mental illness:delusions of persecution.