say it: BUHM-buh-ling
bumbling is an adjective meaning "lacking physical movement skills, especially with the hands". It carries one recorded sense.
lacking physical movement skills, especially with the hands
“a bumbling mechanic”
“a bungling performance”
“ham-handed governmental interference”
“could scarcely empty a scuttle of ashes, so handless was the poor creature”
Definitions, synonyms and semantic relations for bumbling come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.