| Word | Definitions | Synonyms |
|---|---|---|
| unilateral | (adjective) involving only one part or side | Synonyms: one-sided |
| (adjective) tracing descent from either the paternal or the maternal line only | - | |
| unilluminated | (adjective) without illumination | Synonyms: lightless, unlighted, unlit |
| unilluminating | (adjective) failing to inform or clarify | Synonyms: unenlightening |