stumble, falter, bumble -- (walk unsteadily; "The drunk man stumbled about")
bumble, stutter, stammer, falter -- (speak haltingly; "The speaker faltered when he saw his opponent enter the room")
Overview of adj bumbling
The adj bumbling has 1 sense
bumbling, bungling, butterfingered, ham-fisted, ham-handed, handless, heavy-handed, left-handed -- (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"- Mary H. Vorse)