| characteristic(noun, weakness, twist, fault, trait) |
| trick(noun, characteristic, trait, habit, eccentricity) |
| twist(noun, trait, chance, surprise, slant) |
| crotchet(noun, chance, surprise, slant, variation) |
| failure(noun, slip, fault, mistake, failing) |
| feebleness(noun, weak, weakness, fault, sick) |
| singularity(noun, weakness, twist, fault, trait) |
| debility(noun, weak, weakness, fault, sick) |
| demerit(noun, weakness, failing, flaw, defect) |
| error(noun, wrong, slip, weakness, crack) |
| languor(noun, weak, weakness, fault, sick) |
| lapse(noun, wrong, slip, weakness, burden) |
| affectation(noun, trait, individuality, idiosyncrasy, quirk) |
| bug(noun, weakness, crack, fault, failing) |
| delicacy(noun, weak, weakness, fault, sick) |
| feeble(noun, adjective, weak, sick, unhealthy) |
| inadequacy(noun, weakness, failing, flaw, defect) |
| peccadillo(noun, weakness, failing, flaw, defect) |
| washiness(noun, weak, sick, unhealthy) |
| weak side(noun, expression, idiom, weakness, failing) |