A final solution to a situation, usually after much deliberation, and a final acceptance of that fact. It can be giving up on expecting someone to show up, or as it's typically used amongst The Mafia, a death sentence.

The simplest definition is: a ultimate, final acceptance. Period. Past all points or avenues of trying to change the situation. Gun at your head, you're done crying, he's not hearing you out. It is what it is. Get on with it motherfucker!
Frank Sheeran: "Tony told the old man to tell me to tell you... 'it's what it is'"
Jimmy: "What it is?"
Frank: "It's what it is."
Jimmy: *sniffling* "They wouldn't dare"

or

Tim: "The pharmacy won't process my refill. I tried everything."
Nick: "Not even for tomorrow?"
Tim: "It is what it is. I'm out of ideas."
by masheteemirage November 28, 2019
Get the It's What It Is mug.
Very old-fasioned upper-class British expression seeking agreement with whatever you've just said. Similar to "don't you think?"
She's a fine piece of totty, what-what?
by Linton February 16, 2004
Get the what-what? mug.
Play on what the hell or WTF. Apparently coined by Tina Fey's Liz Lemon character on the tv sitcom 30 Rock. Somewhat sarcastic poke at tv language censor dubbing where over-dubbed audio often uses lame alternatives the actual swear word. What the fuck you motherfucker would be dubbed "What the frick you motherlover?!?"
Dude1: I just heard Michael Jackson died, Farrah Fawcett died and China blocked Twitter and Facebook. Too much! I can't believe it!
Dude2: Whao, what the what?!
by buckedchuck July 8, 2009
Get the What the What? mug.
A signal of comradery given among gangstaz to symbolize brotherhood. That is, not to exclude womyn either.
Chant:
"Lab AB!"
"What what!"
"AB"
"what what"
ect...
by Josh, Kevin, Durfs September 4, 2005
Get the What what mug.
phrase made popular by rapper Noreaga or NORE. it can be used as a greeting like what up. or in a fight when you win, then get up in that bitches face and be like, what what!
what what homes! thizz is what it is
by sweetness-and-light May 17, 2007
Get the what what mug.
i said what what in the butt, i said what what in the butt, you wanna do it in my butt, in my butt, you wanna do it in my butt, in my butt, you wanna do it in my butt, in my butt, lets do it in the butt, OK.
by A Frost July 11, 2008
Get the what what mug.