Do you know how to say hi and bye in both MSA and ECA ? In Modern Standard Arabic we say : Hi = ِأهـلاً وسهلاً Bye = مَع السَّلامـَة In Egyptian Colloquial we say : Hi = It's a bit different, like we use other meanings as : يـا برنـس - يا استـاذ - يا جميلة - حبيبي - يا صاحبي Which means : Hey Awesome - Hey Champ - Hey Mr - Hey beauty - Hey dear - Hey friend - hey star ..... etc Bye = سـلام - باي ياي - مع السلامة - يلا سلام which means : Peace - Good bye - Bye Bye - Let's leave in Peace