The verb fuck in different languages as taken from Wikipedia History and Definition of the word Fuck
Afrikaans: fok ("fok my", "fok jou")
Albanian: qi ("qifsha" when used in sentences)
Arabic: neak
Armenian: kunel
Bosnian: jebati (to fuck)
Bulgarian: еба (eba)
Catalan: follar, cardar, fotre
Chinese (Cantonese): diu (屌, but often denoted as the character 小 inside the character 門(). Pronounced like "dew" in English)
Chinese (Mandarin/Putonghua):
diao (屌) Also refers to penis, esp. in Northern China; means "damn" or "darn" in Taiwan.
cao (肏/操) (肏 pronounced "tsaau" and 操 pronounced "tsou")
gan (幹) (used more by native speakers of Taiwanese, it occurs in the expression "Gan ni niang!" which means, "Fuck your mother!")
Cebuano: iyot
Croatian: jebati; fukati (probably borrowed from English); karati (literally, to scold)
Czech: píchat (literally "to thrust", used as a slang word for "to copulate"); ?ukat, ?oustat (? as "sh"), mrdat (all three vulgar, to have sex [with], to fuck); kurva! (vulgar, literally "bitch", used as an expletive)
Danish: knep
Dutch: neuken (also, the Dutch verb fokken, meaning to breed animals, usually for pedigree)
Esperanto: fiki
Estonian: nikkuma, nussima, keppima
Filipino: kantot
Finnish: vittu (Curseword, "Voi vitun vittu!!"="Fucking fuck!!", literal meaning of "vittu" is "cunt") nussia (verb)
French: baiser (to have sex with); foutre (dismissive: "Va te faire foutre!" meaning "Go screw yourself!"; "Fous le camp!" meaning "Fuck off!" or "Shove aside!")
French (Canada): nicker; fourrer (literally, to stuff); the adjective fucké, a borrowing, means broken or out of luck, and is not especially profane. See sacre.
German: ficken (to have sex with, pronounced like fucken, just with a short e instead of the u)3
Greek: gamao, gamo, gamisi; Γαμάω, Γαμώ, Γαμίσι ("g" prounounced softly, as a voiced velar fricative)
Gujarati: chod ("Ch" as in check & "d" is pronounced softly)
Hebrew: "lezayen", from noun "zayin", which is a slang word for the penis
Hindi: chod (चोद)("Ch" as in check & "d" is pronounced softly)
Hungarian: baszni
Icelandic: ríða (pronounced "ree-tha" with a soft th-sound)
Indonesian: ngentot
Italian: fottere, scopare
Japanese: ["fuzakeru"¹]
Kannada: kay-yi
Korean: "ssi-bal" (씨발), pronounced like the English words "she ball"
Lithuanian: pisti
Malay: puki (likely an adoption of fuck) or pukimak (likely an adoption of motherfucker) or celaka (bastard)
Malayalam: uook
Nepali: chik (verb, pronounced chick)
Norwegian: knulle, pule
Persian/Farsi: ga-yee-dan
Polish: jebać (pronounced yebatch), Pierdolić (pronounced pee-erdolitch), kurwa (pronounced koorva, used as an interjection)
Portuguese: foder (or comer subjectively used, because it means "to eat", in Northern Portugal pinar is also used)
Romanian: a fute
Russian: yebat [ебать] (transitive), yebatsa [ебаться] (intransitive).
Samoan: mea This is not used as a swear word but is not used in polite company. Other anatomical and physiological words are used as swear words but not "mea" or any other related word.
Serbian: јебати (jebati), карати (karati)
Slovak: jebať, drbať
Spanish: Follar
Argentina: coger (this same verb in Spain and other countries means "to grab")
Chile: culear
Colombia: pichar or tirar (the last one means "to throw" in most other Spanish-speaking countries)
Ecuador: tirar, culear, pegarse un palo, pegarse un polvo (meaning "to take a dust" in most other countries)
Mexico: chingar or less but commonly used joder also vergar (translatable as "to dick")
Peru: cachar
Spain: joder (usually as an all-purpose expletive, can be accompanied by other expletives) or follar
Tamil: Oatha or Oththa
Swedish: knulla
Thai: [There is no insulting version.²]
Turkish: sikmek (Pronounced "seek-make"), düzmek, siktir (="fuck off")
Urdu: چودنا (verb), Chodi (noun)
Viet: dit (Pronounced "dee"), or deo
Example: "Dit me may!" or "Deo me may!" (insulting words similar to "motherfucker", where 'me' is pronounced meh and 'may' is pronounced my)
Yiddish: shtup (שתוופ) (literally "to stuff")
¹Ambiguously translated back to English as "to fool around". Many have argued that a verbal translation of "fuck" into Japanese is impossible, but Japanese vulgarity largely comes from speaking in a forceful and explicit manner. Offensive language is communicated through directness, self-importance, emphatics, and curtly abbreviated expressions. When "fuzakeru" is lazily truncated by dropping the "fu" and the formal verb ending "ru" while adding "na" to mean "not" and "yo" for exclamation, we have Zakennayo! which if uttered aggressively, sounds like "Don't fuck with me, asshole!" to the Japanese ear, even though its root literally translates as "don't mess around". It should also be noted that almost all American curse words, including "fuck", are recognizable to the Japanese because of their use in films.
²Thai has a medical word for sexual intercourse (which translated back means "genitalia touching") and at least two slang versions for it. But even the slang versions wouldn't work as insults. To the amusement of Thais, the name of the German automaker Audi sounds like one of the two slang versions. To confuse matters, Thais have a vegetable whose name sounds like fuck (it irritates some tourists when they hear the name because they think they are being insulted). But the correct pronunciation for this vegetable is "fug" with the "g" like in "guest".
3 On an interesting side note, the word ficken was seemingly not used as an expletive in German until recently. (It was, however, a taboo word, but this due to its literal meaning, and its belonging to vulgar speech.) That today fick dich! is used as a common (though very strong) expletive meaning fuck off! is clearly a borrowing from English. The general all-purpose taboo expletive and correct translation of fuck! remains Scheiße, literally shit, or, increasingly common, fuck used in untranslated verbatim.
