Open English Wordnet
Nouns
(n)unwieldinessthe quality of being difficult to direct or control by reason of complexity“avoiding the unwieldiness of formal legal processes”, “the onset of unwieldiness and bureaucracy in large organizations”
(n)awkwardness, cumbersomeness, unwieldinesstrouble in carrying or managing caused by bulk or shape“the movers cursed the unwieldiness of the big piano”