How do you say 'What's up' in Japanese?

Answer 1

最近、どう

Saikin, dō

Informal greetings such as 'ossu' or 'yo' or 'chiwassu' (you would hear something more like cho-ossu) or 'genki?' can be used in Japanese that are close to that phrase.

Answer 2

Nani ka atta
also ossu- its a slang way of saying hello
this is slang context
whattup!(a greeting) is also ossu
'sup (the response)-ussu
whazzap!- uissu
and whazzaaaaaaap? (response)- ussussu

"Dou desu ka?"
doe dess kah

Answer 3

元気でやってる

Genki de ya~tsu teru

____

This is not correct. Well, the written Japanese is, but not the pronunciation.

The small 'tsu' (っ) there is actually not meant to be pronounced normally (though it would be if it were full size). When it's small like that, it's called a sokuon and all it means is that the following consonant (in this case the 'T' from 'te') is doubled.

So it becomes "Genki de yatteru" in spoken Japanese.