BYE BYE

Albanian

mirupafshim (adieu, au revoir, bye, good buy, good bye, so long). (various references)

Arabic 

‏وداعا (cheerio, farewell, good bye, pip pip), ‏الى اللقاء (bye, pip pip). (various references)

Bulgarian 

сън (doss, dream, kip, repose, sleep), спане (doss, kip, sleep), легло (bed, bunk, cushion, doss, hay, kip, mounting, pad, pillow block, sack). (various references)

Czech

sbohem (adieu, bye, good bye). (various references)

French

au revoir (bye, good bye), à la prochaine (good bye). (various references)

Greek 

γειά σασ (hello). (various references)

Hungarian

viszontlátásra (adieu, au revoir, bye, cheerio, farewell, good bye, goodbye, so long), viszlát (bye). (various references)

Italian

ciao (hello), arrivederla (good bye, see you later), arrivederci (bye, goodbye, see you later, so long), addio (adieu, bye, farewell, goodbye). (various references)

Pig Latin

yebay yebay.(various references)

Romanian

somn (sleep), pa (so long, tata), nani (hush-a-by), la revedere (cheerio, farewell, good bye, I hope soon to see you again, see you soon, so long, till next time). (various references)

Russian 

пока (whilst, while, whiles). (various references)

Serbo-Croatian

pozdrav (bye, greeting, obeisance, salutation, salute). (various references)

Spanish

hasta mañana (good bye, see you tomorrow), hasta luego (see you later, so long), hasta la vista (so long), hasta la próxima (good bye), adiós (adieu, farewell, goodbye, bye). (various references)

Swedish

hej då (adieu, bye, farewell, goodbye, so long, tata). (various references)

Turkish

yatak (bed), uyku (dorm-, nap, repose, rest, shuteye, sleep, sleeping, slumbers), hoşça kal (adieu, ave, cheerio, good bye, goodbye, goodday, ta-ta), güle güle (au revoir, ave, farewell, good bye, goodbye, take care, take care of yourself). (various references)

Ukrainian

прощайте (adieu, bye, vale). (various references)