Open English Wordnet
Adjectives
(s)gawky, clumsy, clunky, ungainly, unwieldylacking 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” (s)clunkymaking a clunking sound