| BLUEBILLS | • bluebills n. Plural of bluebill. • BLUEBILL n. an American duck of the genus Fuligula. |
| BLUEBIRDS | • bluebirds n. Plural of bluebird. • Bluebirds prop.n. (Soccer) Cardiff City Football Club, a football club in Cardiff. • Bluebirds n. Plural of Bluebird. |
| BUBALISES | • BUBALIS n. (Greek) a large antelope, also BUBAL, BUBALE. |
| BUBBLIEST | • bubbliest adj. Superlative form of bubbly: most bubbly. • BUBBLY adj. full of bubbles. |
| BUILDABLE | • buildable adj. That can be built. • buildable adj. (Construction) Suitable for building on. • BUILDABLE adj. that can be built. |
| BULLBRIER | • BULLBRIER n. a prickly American vine. |
| BURBLIEST | • burbliest adj. Superlative form of burbly: most burbly. • BURBLY adj. burbling. |
| CLUBBIEST | • clubbiest adj. Superlative form of clubby: most clubby. • CLUBBY adj. characteristic of a club. |
| DUBITABLE | • dubitable adj. Capable of being doubted; susceptible of being questioned. • DUBITABLE adj. liable to be doubted; uncertain. |
| HUBBLIEST | • HUBBLY adj. having an uneven surface. |
| KNUBBLIER | • KNUBBLY adj. having little lumps, also NUBBY, KNUBBY. |
| NUBBLIEST | • nubbliest adj. Superlative form of nubbly: most nubbly. • NUBBLY adj. having small protuberances, also NUBBY. |
| QUIBBLERS | • quibblers n. Plural of quibbler. • QUIBBLER n. one who quibbles. |
| RUBBLIEST | • rubbliest adj. Superlative form of rubbly: most rubbly. • RUBBLY adj. abounding in rubble. |
| SLUBBIEST | • SLUBBY adj. lumpy, knobbly in texture. |
| STUBBLIER | • stubblier adj. Comparative form of stubbly: more stubbly. • STUBBLY adj. covered with stubble. |