bumble 1
— bumbler , n.
/bum"beuhl/ , v. , bumbled, bumbling , n.
v.i.
1. to bungle or blunder awkwardly; muddle: He somehow bumbled through two years of college.
2. to stumble or stagger.
3. to speak in a low, stuttering, halting manner; mumble.
v.t.
4. to do (something) clumsily; botch.
n.
5. an awkward blunder.
[ 1525-35; perh. b. BUNGLE and STUMBLE ]
bumble 2
/bum"beuhl/ , v.i. , bumbled, bumbling .
to make a buzzing, humming sound, as a bee.
[ 1350-1400; ME bomblen, freq. of bomben to boom, buzz; imit. ]