Answer: misadds

AnswerCrossword Clue
MISADDSIs totally wrong?
MISADDSGets the total wrong
MISADDSGets the wrong number, maybe
MISADDSScrews up totally?
MISADDSDoes sumthing wrong?
misaddsto join so as to increase
misaddsto find the sum of
misaddsto be an addition
misaddsto say further