Slang. Adjective. Flake is a title applied to people who exhibit "flakey" behavior, which is simple unreliability in regards to social responsibilities. General unreliability includes flakeyness, but involves more; a flake merely fails to recognize their social responsibilities to others, while an unreliable person will often disappoint even themselves. This term also sometimes applies to professional unreliability, where the work involves some social element, resulting in an unfair responsibility distribution.

This can be caused by a wide variety of factors, including laziness, selfishness, a lack of respect, or a variety of manipulative personality disorders.

It is important to note that genuine inability is not actual flakeyness, and the assumption of such is an act of ignorance. A person who is not a flake will consider the consequences of their inconsistency, make a reasonable attempt to inform those it affects as early as possible, and likely attempt to make amends for their failure at a later date. A person who actually has some disability affecting their memory is also not a flake; irresponsibility is not their choice.
Jack and I were told to rake scrap from the work yard. Jack was fine before that, but suddenly got sick and had to go home. Then I had to do it myself. That flake came to work the next day just fine.

Jill asked Tom on a date to see a movie, and Jack agreed. Tom never showed up and wouldn't answer any calls. When she asked him what happened in person, he said he forgotten he had to play poker that night. The flake also missed our poker game.
by Kydo July 29, 2015
Get the Flake mug.
Flake is a particularly potent/strong cut of cocaine. It will be more expensive but the high is cleaner and lasts longer. You'll still end up doing the whole bag though.
'Flake is £50 a gram but much better that the 30 bags'
by The taxi man November 26, 2016
Get the Flake mug.
A Flake is someone who can think of any excuse not to show up to an event. They usually have little or no friends because they never show up to hang out. they are fuckin cunts on wheels who will bail on you at the last minute so they can just sit on thier fat ass an rub one out. Abondon all hope of ever being good friends with a flake. They cause nothing but anger an wasted money on gas an beers.

A Flake may call at the last minute to tell you he or she will not be attending the event or most of the time they wont call at all leaving you sitting there by yourself, looking like a real jerk off. They rarely, if ever admit to being a flake an usually stick to thier excuse that they had something more important to do.
Drew: "Hey are you still down to go to Vegas?!?"

Garrett: "Naw dude I cant, I got a paper to write"

Drew: "BUT ITS SPRING BREAK! Youre such a fuckin flake!"
by llegoz October 16, 2009
Get the Flake mug.
n: flake

A person whose social and psychological outer layer slips away when under pressure. They lack integrity, resilience and robustness. For their protection they depend upon unrealistic and imaginative constructs.

---

(I was called out on my use of the word "flake" recently and was challenged to define it. I came up pretty much with the above definition and then went through all the other definitions that people have supplied to the UD for it. I was struck by the consistency of them - especially the self-interest and unreliability. We know who these people are ...)
There's no place for flakes WTSHTF
by GrimlyFiendish January 2, 2011
Get the flake mug.
A flake is an insincere person. Insincere in anything they say or do.
Text from Tanya> hey bud let's meet out!
Text from Tanya> we be clubbin' 2nite woohoo!!
Text from Tanya> let's do this!!!

<Reply> OK let me know when you get there.

Text from Tanya> B there in 10 minutes.

....Half-hour later
<Reply> I'm here. Where the hell are you?

........Hour and 1/2 Later
<Reply> WTF? Thanks a lot.

Text from Tanya: Couldn't make it my pants ripped.

<Reply> OK next time keep your fat ass at home instead of wasting my time, Flake!
by What matters September 17, 2009
Get the Flake mug.
A Frequently unreliable person who says that they will do somthing or attend somthing, but never shows. Usually this is done without notice.
"Alex isn't here yet, we need to start playing poker!... I bet he flaked again"
by John70 October 11, 2007
Get the flake mug.
A FLAKE is ONLY when a person does NOT inform the person/parties AHEAD* of time that he is unable to make the engagement. On dates, people get STOOD UP. At events, he is considered a NO-SHOW.

Later, flakes generally give lame excuses for their absence or attempt to ignore their behavior altogether.

* A flake is NOT necessarily someone who is LATE or someone who informs the party ahead of time that they are unable to make the event.
Ya know, Bob is such a flake. He coulda (at least) called to let us know that he wasn’t gonna show up.”
by MNMaxCat April 6, 2020
Get the Flake mug.