"unwieldiness" in the noun sense
1. unwieldiness
the 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"
2. awkwardness, cumbersomeness, unwieldiness
trouble in carrying or managing caused by bulk or shape
"the movers cursed the unwieldiness of the big piano"
Source: WordNet® (An amazing lexical database of English)
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