Entry 1 sense Webster, 1913 bumbling · IPA /bˈʌmbəlɪŋ/ 01 adj. not skillful in physical movement especially with the hands; as, a bumbling mechanic. 1. not skillful in physical movement especially with the hands; as, a bumbling mechanic. Syn. bungling, butterfingered, ham-fisted, ham-handed, handless, heavy-handed, left-handed.