what do you say this word in bengali?

' What are you doing' is the appropriate translation of the word in question. I supplement a few more :

Ki korbe = what you will do ?

Ki korechho = what you have done

Ki hoyechhe = what happened

Ki korbo = What to do?-

ki kor chhilam = what I was doing

ki korchhile = what you were doing

Any more ?

Most answers were 'what are you doing' but it should not be word for word translation. The appropriate statement in English would be 'What are you upto'. The word 'korcho' here does not mean the 'doing of an act'.

Bangla: ki korcho? = English: What are you doing?

Ki = What

Korchho = Doing

Pls note that Cha: Cha and C(s)ha: Chha. Therefore, it would be accurate if you would ask "Ki Korchho?"

Hope above helps.

There is no Bangla word as "Fetli". May be that girl would be using some colloquial word from Sylheti Bangla (I am not sure) where 'fetli' may mean something. If it's "Petni" then it mean witch. But witch is not compatible for a man. Can you try to find out the exact spelling of 'fetli'? Buri is for old-lady. It's a derogatory terms to address old lady as 'Buri'. However, you can call a minor girl as 'buri' affectionately. Hope above helps.

What are you doing?

'ki ' means what

'korcho' means doing

Ki chai?

As other answerers have said already, it means "What are you doing". It also could mean "What have you done".

what are you doing reading a book or a notebook

What are you doing?

what u doing