So, here's a handy guide to the most common Italian expressions/words, to be used wherever you want, but especially in game!
Use insults/swearing at your own risk ;)
Legenda:
Italian = English;
(pronounce)
1. GREETINGS
Ciao (most common, informal) = Hi/bye/goodbye; (chia-o) (ch like in Che Guevara)
Bella (slang) = Hi; (be-lla) (be like in "Belgium")
Buongiorno = Good morning; (boo-on-gee-or-no)
Buonasera = Good evening; (boo-ona-se-ra)
Buon pomeriggio (hardly ever used) = Good afternoon; (boo-on-pome-ree-ggio)
Arrivederci (formal) = Goodbye/bye; (arr-ee-ve-der-chee) (ch like you'd read Che Guevara)
2. SET PHRASES
Come va? = How are you?/What's up?; (co-meh-và)
Come stai? = How are you?; (co-meh-sta-ee)
Che mi racconti? = What's new?; (ke-mee-raccon-tee)
Che ore sono? = What time is it?; (ke-ore-so-no)
Dove vai? = Where are you going?; (do-ve-va-ee)
Dove sei stato? = Where have you been?; (do-ve-se-ee-stato)
Che hai fatto? = What have you been doing? or What have you done?; (ke-ha-ee-fatto)
3. TYPICAL VOICECOMS/DIRECTIONS
Bel colpo! = Nice shot!; (bel-col-po)
Scusa = Sorry; (scoo-sa)
Fantastico = Awesome; (fun-tast-ee-co)
Bella partita = Nice/good game; (bel-la-par-tee-ta)
Grazie = Thanks; (gra-tsee-e)
Grazie, amico! = Thanks, man! (gra-tsee-e-amee-co)
Destra = Right; (des-tra)
Sinistra = Left; (see-nee-stra)
Centro = Middle; (che-ntro) (che like you'd read Che Guevara)
4. CONGRATULATIONS/WISHES
Complimenti = Congratulations; (comp-lee-men-tee)
Congratulazioni = Congratulations; (cong-ra-tool-a-zee-on-ee)
Auguri (birthday) = Happy birthday/happy New Year, etc; (au-goo-ree)
Buon Natale = Merry Christmas; (boo-on-Na-ta-le)
Buon compleanno (alternative to Auguri) = Happy birthday; (boo-on-comp-le-anno)
Tanti auguri = Best wishes; (tan-tee-aoo-goo-ree)
4. GENERIC WORDS
Si = Yes; (see)
No = same as English;
Certo = Sure; (che-rto) (che like you'd read Che Guevara)
Naturalmente = Of course; (na-too-ral-mente)
Forse = Perhaps/maybe; (for-se)
Quando = When; (coo-an-doh)
Quanto = How much; (coo-an-toh)
Dove = Where; (do-ve)
Perché (question) = Why/because; (per-ké)
Chi = Who; (kee)
Bello = Nice/handsome/good-looking; (bello)
Brutto = Bad/ugly; (broo-tto)
5. INSULTS/SWEARING
Vaffanculo = Fuck you; (vaffan-cool-o)
Fanculo = Short form for fuck you; (fan-cool-o)
Stronzo = Asshole; (stron-tso)
Coglione = Cunt; (co-gl-ee-on-e) (I don't know how to explain how to pronounce gl)
Puttana = Bitch; (poo-tta-na)
Zoccola = soft form for Bitch; (zo-cco-la)
Figlio di puttana = Son of a bitch; (fee-gl-ee-o-dee-poo-tta-na) (same here for gl)
Testa di cazzo = Dickhead; (testa-dee-cat-so)
Testa di minchia (this is more a Sicilian form) = Dickhead; (testa-dee-meen-kee-a)
Frocio = Gay (or faggot); (fro-chee-o) (ch of Che Guevara)
Ricchione (more a Sicilian form) = Gay; (reek-kee-on-e)
Suca (purest word of Sicilian) = Suck it; (soo-ca)
Have fun! I'll add anything you want ;)