| THUNDERLESS | • thunderless adj. Without thunder. • THUNDERLESS adj. without thunder. |
| UNDERLAPPED | • underlapped v. Simple past tense and past participle of underlap. • UNDERLAP v. to extend partly under. |
| UNDERLAYERS | • underlayers n. Plural of underlayer. • UNDERLAYER n. a lower layer. |
| UNDERLAYING | • underlaying v. Present participle of underlay. • UNDERLAY v. to place under. |
| UNDERLEASED | • underleased v. Simple past tense and past participle of underlease. • UNDERLEASE v. to sublease. |
| UNDERLEASES | • underleases n. Plural of underlease. • underleases v. Third-person singular simple present indicative form of underlease. • UNDERLEASE v. to sublease. |
| UNDERLEAVES | • underleaves n. Plural of underleaf. • UNDERLEAF n. in liverworts, any of the leaves forming a row on the underside of the stem. |
| UNDERLETTER | • underletter n. (Property law) Synonym of sublessor. • UNDERLETTER n. one who underlets. |
| UNDERLINENS | • underlinens n. Plural of underlinen. • UNDERLINEN n. (archaic) underclothing. |
| UNDERLINING | • underlining v. Present participle of underline. • underlining n. An act or instance of marking text with an underline. • underlining n. A lining on the inside of a garment. |
| UNDERLOADED | • underloaded adj. Carrying a smaller load than normal or optimal. • UNDERLOAD v. to load insufficiently. |
| UNDERLOOKER | • underlooker n. (Mining) A daily inspector of a mine. • UNDERLOOKER n. a mine manager's assistant, also UNDERVIEWER. |