| Word | Definitions | Synonyms |
|---|---|---|
| unai | (noun) relatively small fast-moving sloth with two long claws on each front foot | Synonyms: Choloepus didactylus, two-toed sloth, unau |
| (noun) a sloth of Central America that has two long claws on each forefoot and three long claws on each hindfoot | Synonyms: Choloepus hoffmanni, two-toed sloth, unau | |
| unaided | (adjective) carried out without aid or assistance | - |
| unaired | (adjective) lacking fresh air | Synonyms: airless, close, stuffy |
| unairworthy | (adjective) not fit to fly | - |