Some bad words in other languages;

Acadian: râper to fuck

Afrikaans: moffie gay

Albanian: debil idiot

Basque: tentelapiko (a) stupid

Breton:reor arse

Cajun: bec mon chu (phrase) kiss my ass

Chinese: hun dan (noun) bastard

Czech: kakat (verb) to shit

Danish: malerhjerne (noun) painterbrain

Dutch: klerebeer naughty little bastard

Finnish: voi helvetti bloody hell

Franch: casser la gueule à quelqu'un (phr.) to beat the shit out of someone

German: verdammter Schweinehund (neut. noun) idiot; absolute moron

Greek: adelfi (noun) homosexual (male)

Hungarian: fene (noun; interjection) hell, damn

Italian: leccaculo ass-kisser

Japanese: bukkoroshite yaru zo (phrase) ‡ I'm going to kill you

Latvian: su'ds (noun) shit

Macedonian: da te seram (duh tee sae-ram) may I poop on you

Purtuguese: sacanagem (noun) something nasty or dirty

Russian: vafl'a flying dick

Slovenian: sranje shit

Swedish: kukhuvud (noun) Dick head

Turkish: yarak kafa dick head

Welsh: bwchio (verb) to fuck