| unfertile(adjective, empty, young, impotent, sterile) |
| idle(adjective, weak, stupid, inadequate, limited) |
| childless(adjective, infertile) |
| inefficacious(adjective, inadequate, feeble, useless, trivial) |
| poor(adjective, weak, slight, thin, base) |
| empty(adjective, poor, base, inferior, insignificant) |
| dead(adjective, dull, bleak, late, barren) |
| fallow(adjective, inactive, unproductiveness) |
| infecund(adjective, weak, clean, empty, bleak) |
| trivial(adjective, poor, base, stupid, inferior) |
| unrewarding(adjective, flat, useless, wasted, ineffective) |
| arid(adjective, clean, useless, empty, bleak) |
| inadequate(adjective, weak, slight, poor, thin) |
| inefficient(adjective, weak, slow, inadequate, limited) |
| lean(adjective, thin, spare, bare, slim) |
| nonproductive |
| desert(adjective, clean, empty, bleak, uncultivated) |
| dry(weak, poor, empty, bleak, insufficient) |
| effete(adjective, weak, clean, empty, bleak) |
| hopeless(adjective, stupid, idle, useless, trivial) |