| Word | Definitions | Synonyms |
|---|---|---|
| unilluminated | (adjective) without illumination | Synonyms: lightless, unlighted, unlit |
| unilluminating | (adjective) failing to inform or clarify | Synonyms: unenlightening |
| uninominal | (adjective) based on the system of having only one member from each district (as of a legislature) | Synonyms: one-member |