Someone who beleives something to be true, when that something can be empirically proved to be nonexistent or otherwise incorrect. A snippet from an e-mail follows:

i recently lost my job and all my belonings do to being hospitail lised with the va .I HAVE HADE 7 BLIEDINGS IN THE PAS 3 -4 YEAR I WILL NEVER WORK AGAIN FOR MY LIVE i found this site very intresting and wood like very much try and find some covert in the study of ariail if you could help me be a member it wood mean so much to me your va patient patrick

Ilive in a travel trailer and have for 4 years sents my first bleed its been down heal from their my email thank you for your time it really goes faster thin you thank

This snippet is presented unedited, except for the e-mail address, which has been excised to protect privacy - and delusion. As you can plainly tell, the person here has suffered greatly from "BLIEDINGS" - which we think is synonymous with "bleedings" which would make this person delusional, as people (including stigmatics) do not spontaneously bleed. This person also thinks he can find comfort from his "BLIEDINGS" in studying aerial photos. You may notice that the phrase used is "find some covert", which indicates that this person may in fact be using aerial photos to conduct covert missions from the comfort of his VA hospital bed.

Whatever he's looking for, I certainly hope he finds it.
It is plainly obvious that "patrick" is delusional.
by The Wry Wordsmith July 24, 2006
16 more definitions
Top Definition
Someone who is not thinking clearly, or thinks something will happen that, in all likelyhood, will not.
guy1: So I'm thinking of asking Leah out. I think she might say yes.
guy2: Ummm, are you delusional or something?
by bandcampgirl183 September 12, 2005
Used to describe someone attached to an idea which is either false, or has changed. An alternative to "living in the past."
1. James still thinks we live in a democracy. He's delusional.

2. Paul listens to the Bee Gees and drives a Trans Am. He's delusional on the 70s, man.
by Col. Dr. April 24, 2006
An insult/label often flung at those who have beliefs that are not commonly accepted.
Person 1: I believe aliens are visiting Earth.


Person 1: No I am not, I've thought about the issue thoroughly

by Shadow Creator March 21, 2008
1. the state of having a false opinion or belief

2. H/Hr shippers
Idiot: Harry and Hermione are like sooooo meant to be together...

Me: You're incredibly delusional... If you could read you would realise Ron and Hermione have amazing amounts of sexual tension...
by msweasley June 05, 2007
1. Someone who believes only their way, and everyone else is wrong.

2. Someone who is obsessed or stuck on one false belief and ignorantly denies logic and reasoning.

3. A derogatory term that Atheists use to describe Christians and other religious people.

4. paranoid
The Preacher shunned the homosexual because he was delusional.
by J.Wil888 February 03, 2009
1. The state of having a false opinion or belief.

2. Used to describe someone attached, possibly obbsessed, with an idea which is either false, or has changed. Synonymous to "living in the past."
Shannon really thinks she could get him back even though its clear there is no way of that EVER happening?!... She's delusional.
by MeowMeoow October 08, 2010
A person who is a Harry/Hermione shipper. They are easily upset, have a limited sense of humour, and do not read particularly well. In their spare time, they like to look for overly used symbolism where none exists. This term was coined by a most wonderful webmaster.
TeenyBopper1892!!: i ship Harry/Hermione. There so kaute and SO canon!!!!1!!!
HeronShipper: A delusional has entered the room, folks.
by Tiffi October 16, 2005

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