stumblebum

[ stuhm-buh l-buhm ]
/ ˈstʌm bəlˌbʌm /

noun Informal.

a clumsy, second-rate prizefighter.
a clumsy, incompetent person.

Origin of stumblebum

First recorded in 1930–35; stumble + bum1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019