ei kai

Interjection

 * 1)  "probably not", "I guess not"
 * 2)  not even used to express strong disbelief, disappointment or disapproval
 * 3)  duh, no duh
 * 4)  don't tell me
 * 1)  duh, no duh
 * 2)  don't tell me
 * 1)  don't tell me

Usage notes
The meaning depends on the tone of voice.