| English | eng-000 |
| unascertainable | |
| Universal Networking Language | art-253 | unascertainable |
| Deutsch | deu-000 | unerreichbar |
| ελληνικά | ell-000 | ανεξακρίβωτος |
| ελληνικά | ell-000 | απροσδιόριστος |
| English | eng-000 | alien |
| English | eng-000 | incognoscible |
| English | eng-000 | indeterminate |
| English | eng-000 | little-known |
| English | eng-000 | nameless |
| English | eng-000 | obscure |
| English | eng-000 | strange |
| English | eng-000 | stranger |
| English | eng-000 | unacknowledged |
| English | eng-000 | unacquainted |
| English | eng-000 | unauthorised |
| English | eng-000 | unauthorized |
| English | eng-000 | unavowed |
| English | eng-000 | unbeknown |
| English | eng-000 | unbeknownst |
| English | eng-000 | uncertain |
| English | eng-000 | uncertified |
| English | eng-000 | unconfirmed |
| English | eng-000 | uncorroborated |
| English | eng-000 | undisclosed |
| English | eng-000 | undiscoverable |
| English | eng-000 | undiscovered |
| English | eng-000 | unenforced |
| English | eng-000 | unestablished |
| English | eng-000 | unfamiliar |
| English | eng-000 | unheard-of |
| English | eng-000 | unidentified |
| English | eng-000 | unknowable |
| English | eng-000 | unknown |
| English | eng-000 | unnamed |
| English | eng-000 | unpredictable |
| English | eng-000 | unratified |
| English | eng-000 | unrecognised |
| English | eng-000 | unrecognized |
| English | eng-000 | unrevealed |
| English | eng-000 | unsealed |
| English | eng-000 | unseeyn |
| English | eng-000 | unsubstantiated |
| English | eng-000 | unsung |
| suomi | fin-000 | tuntematon |
| suomi | fin-000 | vahvistamaton |
| yn Ghaelg | glv-000 | do-feddyn magh |
| हिन्दी | hin-000 | अनिश्चेय |
| tiếng Việt | vie-000 | không thể xác minh |
| tiếng Việt | vie-000 | không thể xác định |