Using http://www.worldlingo.com/en/products_services/worldlingo_translator.html, "working hard" is translated as "يعمل بشدّة", from English to Arabic, and is pronounced as "ye'mil bshida".
Saabi kteer
Saabi kteer
bookran or ghadan which is more sophisticated
If you want to say Arabic in Arabic this is how you say it=Arabi
Son trabajadores
¿Trabajas duro?
no
hard working, laborious
To say 'disbeliever' in Arabic, you would say 'kaffir.'
In Arabic we say Ramadan.
kabid
With is مع in Arabic.