[Sting.]

Here are some Italian Bad Words. I'm not Italian, but I know em.
Cazzo - Fuck (Dick/Cock)
Cazzo'le - Fucker/Fucking
Merda - Shit
Asholati - Asshole
Basterdo - Bastard
Fotiti - Go Fuck Yourself
Sega - Pussy
Figa - Cunt/Pussy
Culo - Ass
Tette - Tits
Palle - Balls
Coglione - Idiot
Puttana - Whore/Bitch
Stronzo - Piece of Shit
Frocio - Faggot
Pompino - Blowjob

For french, the one and only bad word I know is:
Putima - Prostitute

I hope this helps, If it did, please give me some reputation. Thanks.