| fatigue(noun, weak, sick, unhealthy) |
| faute |
| feature(noun, trait, individuality, idiosyncrasy, quirk) |
| flabbiness(noun, weak, sick, unhealthy) |
| flaccidity(noun, weak, sick, unhealthy) |
| flimsy |
| frangibility(noun, weak, sick, unhealthy) |
| freakishness(quirk, irregularity, peculiarity, aberration, abnormality) |
| gaff(noun, slip, failure, mistake, breach) |
| glitch(noun, weakness, crack, fault, failing) |
| gremlin(noun, weakness, crack, fault, failing) |
| guilt(noun, wrong, weakness, burden, blame) |
| habit(noun, twist, trait, chance, eccentricity) |
| hereticism(irregularity, peculiarity, nonconformity, aberration, abnormality) |
| hyposthenia(noun, weak, sick, unhealthy) |
| idiocrasy(irregularity, peculiarity, nonconformity, aberration, abnormality) |
| impropriety(noun, wrong, weakness, burden, blame) |
| impuissance(noun, weak, sick, unhealthy) |
| inaccuracy(noun, wrong, weakness, burden, blame) |
| incongruity(quirk, peculiarity) |