1. a clumsy or incompetent person
Usage: informal
2. an inept boxer or fighter
Usage: informal; boxing

Examples

• The new employee was such a stumblebum that he broke three dishes on his first day.
• Don’t let that stumblebum handle the delicate equipment.
• The once-great boxer had become a stumblebum, losing fight after fight.
• She called him a stumblebum after he tripped over his own feet.
• The manager was tired of dealing with stumblebums who couldn’t follow simple instructions.
• In the ring, he looked like a complete stumblebum against the seasoned fighter.