'stumblebum' definitions:

Definition of 'stumblebum'

(from WordNet)
noun
A second-rate prize fighter [syn: stumblebum, palooka]
noun
An awkward stupid person [syn: lout, clod, stumblebum, goon, oaf, lubber, lummox, lump, gawk]

Synonyms of 'stumblebum'

From: Moby Thesaurus