inability disinclination dullness failure incapacity inelegance ineptitude ineptness lack stupidity ugliness incompetence inadequacy incapability powerlessness ineffectiveness impotence incompetency inefficiency uselessness insufficiency unfitness inefficacy ineffectualness weakness helplessness incapacitation hopelessness inutility frailty inaptitude disqualification disability limitation clumsiness ignorance maladroitness awkwardness artlessness inexperience amateurishness inexpertness unskillfulness ineffectuality difficulty want incapableness deficiency shortcoming shortcomings crudeness misunderstanding pains hardship loss hardness entertainment avocation hate dislike sloppiness ungainliness imperfection unsophistication shoddiness rawness gaucherie inanity unimaginativeness drawback recreation openness ungracefulness amateur impossibility deficit inaptness unsuitability unskill science senselessness failing unskilfulness witlessness obtuseness denseness mistake misinterpretation insensitivity surrender penalty miss forfeit students antipathy need impairment defectiveness silliness folly