defect, drawback, failing, fault, flaw, foible, frailty, imperfection, weakness, weak point
English Collins Dictionary - English synonyms & Thesaurus
shortcoming ( shortcomings plural ) Someone's or something's shortcomings are the faults or weaknesses which they have. n-count usu pl, oft with poss
Marriages usually break down as a result of the shortcomings of both partners...
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