Answer: stumblebum

AnswerCrossword Clue
STUMBLEBUMPalooka
STUMBLEBUMInept boxer
STUMBLEBUMDoofus
STUMBLEBUMLummox
STUMBLEBUMSecond-rate prizefighter
stumblebum(US) an awkward person
stumblebumA clumsy or inept person