| unproficiency |
| unqualifiedness |
| vulgarity(rudeness, indiscretion, thoughtlessness, crudeness) |
| vulnerability(noun, weakness) |
| ad lib |
| baseness |
| blemish(defect, deficiency, imperfection, limitation, inadequacy) |
| boorishness(noun, rudeness, indiscretion, thoughtlessness, vulgarity) |
| cloddishness(noun, rudeness, indiscretion, thoughtlessness, vulgarity) |
| clumsiness inelegance(expression, rudeness, indiscretion, thoughtlessness, vulgarity) |
| coarseness(noun, rudeness, indiscretion, thoughtlessness, vulgarity) |
| dearth(defect, deficiency, imperfection, inadequacy, shortage) |
| debility(noun, weakness, delicacy, inadequacy, shakiness) |
| decrepitude(noun, weakness, delicacy, inadequacy, shakiness) |
| defalcation(defect, deficiency, imperfection, inadequacy, shortage) |
| deficit(defect, deficiency, imperfection, inadequacy, shortage) |
| dilettantism(noun, stupidity, ignorance, inability, incapacity) |
| disease(noun, weakness, delicacy, inadequacy, shakiness) |
| disservice |
| drawback(defect, deficiency, imperfection, inadequacy, shortage) |