| default(noun, decline, neglect, slip, weakness) |
| deficit(noun, decline, ruin, defeat, weakness) |
| degenerate(adjective, corrupt, immoral, debased, deteriorated) |
| delinquent(adjective, careless, reckless, negligent, slipshod) |
| disadvantage(noun, weakness, fault, negative, problem) |
| disappointing |
| disregarding(verb, neglecting) |
| draining |
| drooping(adjective, weakening, fading, wearying, flagging) |
| drop(noun, verb, fall, failure, deterioration) |
| expiring(verb, adjective, last, final, ultimate) |
| fail |
| flop(noun, drop, decline, ruin, defeat) |
| fragile(adjective, weak, thin, delicate, ill) |
| ignoring(noun, verb, slip, breach, lapse) |
| ill(noun, adjective, weak, weakness, delicate) |
| impairment(noun, decline, defeat, weakness, collapse) |
| in default of(verb, expression, idiom, phrasal verb, preposition) |
| indisposed(adjective, ill, unwell, poorly) |
| insufficiency(noun, weakness, lack, flaw, defect) |