| without basis(expression, quality, weakness, instability) |
| contestable(adjective, characteristic, weakness, proof) |
| ill-founded(adjective, characteristic, weakness, proof) |
| unattestable(adjective, characteristic, weakness, proof) |
| unauthenticated(adjective, characteristic, weakness, error, proof) |
| unconfirmable(adjective, quality, weakness, instability) |
| undemonstrable(adjective, quality, weakness, instability) |
| ungrounded(adjective, quality, weakness, instability) |
| biodegradable(adjective, nature, hazard, danger) |
| biohazard(adjective, nature, hazard, danger) |
| defective(adjective, characteristic, weakness, defect) |
| faint(adjective, characteristic, weakness, defect) |
| false(adjective, characteristic, weakness, defect) |
| faulty(adjective, characteristic, weakness, defect) |
| feeble(adjective, characteristic, weakness, defect) |
| flimsy(adjective, weakness, vulnerability, characterisric) |
| fragile(adjective, weakness, vulnerability, characterisric) |
| inadequate(adjective, weakness, vulnerability, characterisric) |
| infirm(adjective, weakness, vulnerability, characterisric) |
| invalid(adjective, weakness, vulnerability, characterisric) |