| vulnerable point(noun, expression, weakness, failing, fault) |
| weakness(noun, point, difficulty, fault, failing) |
| Achilles' heel(noun, expression, weakness, fault, lack) |
| frailty(noun, point, weakness, fault, lack) |
| small but fatal weakness(noun, expression, weakness, fault, lack) |
| weak point(noun, expression, difficulty, weakness, fault) |
| weak spot(noun, expression, point, difficulty, weakness) |
| defect(noun, point, weakness, fault, lack) |
| failing(noun, point, weakness, fault, lack) |
| infirmity(noun, weakness, fault, lack, lapse) |
| vulnerability(noun, point, weakness, fault, lack) |
| appetite(noun, weakness, fault, lack, lapse) |
| blemish(noun, weakness, fault, lack, lapse) |
| chink in armor(noun, expression, idiom, weakness, fault) |
| debility(noun, weakness, fault, lack, lapse) |
| decrepitude(noun, weakness, fault, lack, lapse) |
| deficiency(noun, weakness, fault, lack, lapse) |
| delicacy(noun, weakness, fault, lack, lapse) |
| enervation(noun, weakness, fault, lack, lapse) |
| faintness(noun, weakness, fault, lack, lapse) |