| scrimpy(adjective, close, light, slight, poor) |
| tainted(adjective, false, insufficient, imperfection, deficient) |
| unapt(adjective, useless, unfit, unsuitable, inept) |
| unavailing(adjective, weak, inferior, short, limited) |
| unequal to(verb, phrasal verb, insufficiency) |
| unfavorable(adjective, bad, poor, small, insignificant) |
| unfitted(adjective, useless, unfit, unqualified, deficient) |
| unfruitful(adjective, weak, slight, poor, thin) |
| unsatisfying |
| unsuited(adjective, weak, useless, inappropriate, unhealthy) |
| wrong(adjective, bad, poor, nasty, unpleasant) |
| anemic(adjective, dull, light, soft, poor) |
| bony(adjective, poor, thin, small, spare) |
| effete(adjective, weak, thin, delicate, shaky) |
| empty |
| fallible |
| frail(adjective, weak, slight, thin, delicate) |
| hapless |
| helpless(adjective, strong, weak, ability, thin) |
| immature(adjective, slight, poor, quantity, modest) |