| 100% | TRESS | 5 | Lock that cannot be opened |
| 62% | KEY | 3 | A lock cannot be opened without this |
| 54% | SUNKCOST | 8 | Outlay that cannot be recovered |
| 53% | INCURABLE | 9 | Health condition that cannot be solved |
| 53% | INDELIBLE | 9 | Permanent ink that cannot be erased |
| 53% | ROOT | 4 | Tooth part that cannot be seen |
| 53% | ACE | 3 | Tennis serve that cannot be returned |
| 53% | AFROS | 5 | Locks that are picked |
| 53% | WIG | 3 | Locks that are picked |
| 52% | ELEMENT | 7 | Chemical substance that cannot be broken down |
| 52% | INDELIBLE | 9 | Like pen marks that cannot be erased |
| 52% | INDELIBLE | 9 | Pen with ink that cannot be erased |
| 52% | DEADLETTERS | 11 | Mail that cannot be delivered or returned |
| 52% | LOCKET | 6 | Pendant that can be opened |
| 52% | HIP | 3 | Joint that might be opened |
| 52% | WIG | 3 | Locks that can be picked? |
| 52% | HAIR | 4 | Locks that can be cut |
| 52% | DYEDHAIR | 8 | Locks that have been changed |
| 51% | MIRACLE | 7 | Event that cannot be explained by scientific laws |
| 51% | RUE | 3 | Feel regret over something that cannot be undone |
| 51% | SILENCE | 7 | Doctor Who aliens that cannot be remembered: the __ |
| 51% | ODDNUMBER | 9 | Uneven value that cannot be divided by 2 |
| 51% | PLAIT | 5 | Lock that's hard to open? |
| 50% | READONLY | 8 | A protected file that cannot be changed or edited |
| 50% | TOUPEES | 7 | Locks that might not be totally secure? |
| 50% | YOUAWAKE | 8 | Question that cannot be answered if its answer is "no" |
| 50% | HYPOCRISY | 9 | “The only vice that cannot be forgiven,” per William Hazlitt |
| 48% | TIME | 4 | Something that cannot be stopped but once lost, cannot be brought back |
| 48% | GESTALT | 7 | Unified whole that cannot be described by the sum of its parts |
| 47% | SILENTSUPPORT | 13 | Opening performers that are all mimes? |