| Rating | Solver | Clue |
|---|---|---|
| IMPERFECT | Fallible | |
| ERRABLE | Liable to error; fallible. | |
| FALLIBLY | In a fallible manner. | |
| UNCERTAIN | Not sure; liable to fall or err; fallible. | |
| INFALLIBLE | Not fallible; not capable of erring; entirely exempt from liability to mistake; unerring; inerrable. | |
| FALLIBILITY | The state of being fallible; liability to deceive or to be deceived; as, the fallibity of an argument or of an adviser. | |
| FALLIBLE | Liable to fail, mistake, or err; liable to deceive or to be deceived; as, all men are fallible; our opinions and hopes are fallible. | |