| debility(noun, weakness, fault, failing, flaw) |
| decrepitude(noun, weakness, fault, failing, flaw) |
| deficiency(noun, weakness, fault, failing, flaw) |
| delicacy(noun, weakness, fault, failing, flaw) |
| deprivation |
| difficulty(noun, fault, failing, flaw, disadvantage) |
| enervation(noun, weakness, fault, failing, flaw) |
| exposed nerve(noun, expression, weakness, partiality, predilection) |
| failure(noun, fault, shortcoming) |
| faintness(noun, weakness, fault, failing, flaw) |
| fancy(noun, weakness, partiality, predilection) |
| feebleness(noun, weakness, fault, failing, flaw) |
| fondness(noun, weakness, fault, failing, flaw) |
| fontanel |
| fragility(noun, weakness, fault, failing, flaw) |
| gap(noun, weakness, fault, failing, flaw) |
| glitch(noun, weakness, fault, failing, error) |
| gremlin(noun, weakness, fault, failing, error) |
| heel of Achilles(noun, expression, idiom, weakness, failing) |
| impairment(noun, weakness, fault, failing, flaw) |