lacking grace in movement or posture; "a gawky lad with long ungainly legs"; "clumsy fingers"; "what an ungainly creature a giraffe is"; "heaved his unwieldy figure out of his chair"
If you describe someone, especially a young person, as gawky, you mean they are awkward and clumsy. a gawky lad with spots. = gangling. someone who is gawky moves or behaves in an awkward way = clumsy