1. what
used when asking about or referring to multiple unspecified things
2. so-and-so; such and such; something (or other)
used when listing things that are unknown or do not need to be specified
3. what?; wait; hang on
used when asking for confirmation upon hearing something surprising
4. well, well; let's see
used when about to read a letter or document
5. no; oh (not at all); please; there, there
used to dismiss someone's words or concerns