noun

lummox

LUM-uks/ˈlʌməks/

A clumsy or awkward person.

The clumsy lummox catches the stack of boxes on the doorway.

An awkward mover tries to carry an excessively wide stack of empty cardboard boxes through a narrow doorway; a box strikes the jamb, tilting the stack and spilling lightweight packing material as she fumbles to steady it.

Etymology

Lummox is recorded as East Anglian slang for a clumsy or stupid man. Its origin is unknown, though a connection with dialectal lummock, “move heavily or clumsily,” is possible.

More examples

He called himself a lummox after dropping the tray.
The comedy portrays him as a good-hearted lummox.
She told the lumbering lummox to mind the narrow doorway.

Forms

lummox · lummoxes

Similar words

klutz: Klutz emphasizes clumsiness; lummox often suggests a large, lumbering person.
galoot: Galoot similarly describes an awkward or foolish person, sometimes affectionately.