An extremely flexible, magic word that exists in nearly every part of speech. It can be used as a noun, verb, adjective, and adverb.
Noun: I don't give a fuck about politics!

Verb: I want to fuck Jessica Alba more than my hand.

Adjective: Shit! That sky is fuckin' blue!

Adverb: President Obama just fuckin' signed a new jobs bill.

All the above: You fuckin' fucked my fuckin' girlfriend, you backstabbing fuck!!!
by rogerthewhale December 04, 2011
Fuck is a very versatile word and can be a noun, verb, adjective, prefix, and suffix all in one word!

Etymology: There are many theories to the origin of "fuck". Some say it was first described in a poem in English and Latin code about people who will not go to heaven because they "fuck wives of Ely", but there are many other theories too, too many to list them all. The word "fuck" was probably first popularized in the 1928 novel Lady Chatterley's Lover, where the word "fuck" was used numerous times. In 1938, a song called Old Man Mose gained notoriety for saying "fuck" in it as well.

The phrase "fuck you" was first mentioned, however, in The Catcher in The Rye by J.D. Salinger.

As a verb, it mostly means to engage in sexual intercourse with the subject, or to destroy/mess up something.

As a noun, it usually means a person disliked by the speaker.

As an adjective (e.g. fucked) it means something destroyed or messed up.

As a prefix or suffix, it is used to create compound swears or insults. Examples are below.

Sometimes, however, it is just thrown around into sentences, proving its decrease in vulgarity among the years.

The more you abuse the word "fuck", the bigger your penis is. It's a proven fact.
verb: I fucked your mom last night, but on the way out of her room I fucked up the doormat.

noun: George is a stupid fuck.

Adjective: I went on 4chan last night and I saw a really fucked up picture of a dick on there!

Prefix: You fuckhead!

Suffix: Kevin is a douchefuck.

Filler: Today I went to the store and I was like, holy fuck, they had a sale on fucking chocolate bars! I mean, fuck, I bought like, 5 chocolate bars for 1 dollar! Holy fucking shit!
by Fucking Fuckfucker July 11, 2009
Fuck is an English word that, as a verb, literally means "to have sexual intercourse with," and figuratively means "to take unfair advantage of." It was at one time the most vulgar word in the English language, and its use would be considered déclassé in polite social circles. But the word has permeated the vocabulary of many social groups (such as lawyers, entertainers, and politicans) who would once have shunned it. Now it is often used simply to provide emphasis, as "very" or "really."

It is unclear whether the word has always been considered vulgar, and if not, when it first came to be used to describe (often in an extremely angry, hostile or belligerent manner) negative or unpleasant circumstances or people in an intentionally offensive way, such as in the term "motherfucker", one of its more common usages in North America.

Fuck is used not only as a verb (transitive and intransitive), but also as a noun, interjection, and, occasionally, as an expletive infix. The etymology of the word is uncertain (see below). Where the speaker feels that extreme emphasis is needed, it may be used several times in a sentence, e.g. "Fuck the fucking fuckers".

There are several urban-legend false etymologies postulating an acronymic origin for the word. None of these acronyms was ever heard before the 1960s, according to the authoritative lexicographical work, The F-Word, and thus are backronym. In any event, the word fuck has been in use far too long for some of these supposed origins to be possible. Some of these urban legends are:

* That the word fuck came from Irish law. If a couple were caught committing adultery, they would be punished "For Unlawful Carnal Knowledge In the Nude", with "FUCKIN" written on the stocks above them to denote the crime.

* That it came from any of:
o "Fornication Under Carnal/Cardinal Knowledge"
o "Fornication Under the Control/Consent/Command of the King"
o "Fornication Under the Christian King"
o "False Use of Carnal Knowledge"
o "Felonious Use of Carnal Knowledge"
o "Felonious Unlawful Carnal Knowledge"
o "Full-On Unlawful Carnal Knowledge"
o "For Unlawful Carnal Knowledge"
o "Found Under Carnal Knowledge"
o "Forced Unlawful Carnal Knowledge", referring to the crime of rape.
"Yit be his feiris he wald haue fukkit: / Ye brek my hairt, my bony ane" (ll. 13–14).
"Fuck, fucking fuckers fucked!"
by Shoshannarose March 18, 2008
acronym meaning Fornication Under Carnal Knowledge.
I bet you didnt know what fuck stood for.
by Cap'n Crunk April 07, 2005
the ultimate word, can be used however many times in a sentence and will still be understood. Replaces any word. adds importance. sounds cool in names
person highly angered: fucking fuck fuck fuck fuck fuck!
if you see this incident and saw what had happened this is an appropriate outburst.

oh shit = fuck
any adjective = fuck

person: he had a green shirt, it was cool
person 2: his green shirt was fucking cool

Mikey Fucking Way
Oprah Fucking Winfrey
50 Fucking Cent

see sounds so much better
by slipintotragedy June 10, 2009
Derived from the old english acronymic phrase (F.U.C.K) Fornication Under Consent of the King
Oh look, that door has a fuck sign on it,they obviously have consent from our king to make a baby
by Firleigh rinse mincers December 16, 2008
Originating from Old English language, this word is commonly used to describe a feast. Old English families would usually hold these semi-annual feasts and they would attract hundreds of people. Unknown to most potty mouths today, this word was actually used very commonly and in a good way.
Sir Bob: Wow what an excellent fuck. I haven't had one that good in a while.

Lady Sarah: Agreed. If I ever need a good fuck, I will definetly go to her castle again.
by iloveexcellentfeasts July 10, 2008

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