| Rating | Solver | Clue |
|---|---|---|
| UNNAMED | Unidentified | |
| MYSTERY MAN | Unidentified person | |
| MYSTERYMAN | Unidentified person | |
| ANONYMOUS | Unidentified; incognito | |
| UFO | Unidentified flying object | |
| UFOS | Unidentified flying objects | |
| DOE | Unidentified female, Jane ... | |
| APIGINAPOKE | Purchase of unidentified item | |
| CROWTOE | An unidentified plant, probably the crowfoot. | |
| HORDOCK | An unidentified plant mentioned by Shakespeare, perhaps equivalent to burdock. | |
| JUSSI | A delicate fiber, produced in the Philippine Islands from an unidentified plant, of which dresses, etc., are made. | |
| BDELLIUM | An unidentified substance mentioned in the Bible (Gen. ii. 12, and Num. xi. 7), variously taken to be a gum, a precious stone, or pearls, or perhaps a kind of amber found in Arabia. | |
| FRANKINCENSE | ... The frankincense of the ancient Jews is still unidentified. ... | |