Answer: RUBSITIN

AnswerCrossword Clue
RUBSITINGloats
RUBSITINAdds insult to injury
RUBSITINCries "nyah nyah nyah!"
RUBSITINHarps upon another's failures: Slang.
RUBSITINAdds insult to injury, say
RUBSITINAdds salt?
RUBSITINAdds salt to a wound
RUBSITINGloats and then some