"gawky" in the adjective sense
1. gawky, clumsy, clunky, ungainly, unwieldy
lacking grace in movement or posture
"a gawky lad with long ungainly legs"
"what an ungainly creature a giraffe is"
"heaved his unwieldy figure out of his chair"
Source: WordNet® (An amazing lexical database of English)
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