ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun
1. : a punch-drunk, clumsy, or inept boxer
was just a strawman built up craftily with knockouts over stumblebums — Ring
2. : a clumsy, inept, or blundering person
has filled most of his … staff with third-raters and stumblebums — E.K.Lindley