WordNet sense 1 (unskillfulness resulting from a lack of training):

clumsiness, ineptitude, ineptness, maladroitness, slowness

WordNet sense 2 (the quality of an embarrassing situation):

nuisance value

WordNet sense 3 (the inelegance of someone stiff and unrelaxed (as by embarrassment)):

gracelessness, stiffness

WordNet sense 4 (trouble in carrying or managing caused by bulk or shape):

cumbersomeness, unwieldiness