| CHESSBOXINGS | • CHESSBOXING n. a hybrid sport which combines the sport of boxing with games of chess in alternating rounds. |
| CONVEXNESSES | • CONVEXNESS n. the state of being convex. |
| DEXTROUSNESS | • dextrousness n. Alternative form of dexterousness. • DEXTROUSNESS n. the state of being dextrous. |
| EXIGUOUSNESS | • exiguousness n. The quality of being meagre or scanty. • EXIGUOUSNESS n. the state of being exiguous. |
| EXOTICNESSES | • EXOTICNESS n. the state of being exotic. |
| EXPROMISSORS | • expromissors n. Plural of expromissor. • EXPROMISSOR n. a person relieving another of debt by taking it upon himself. |
| ISOXSUPRINES | • ISOXSUPRINE n. a drug which dilates blood vessels, used to inhibit contractions in premature labour and in the treatment of arteriosclerosis. |
| PROLIXNESSES | • PROLIXNESS n. the state of being prolix. |
| SAXOPHONISTS | • saxophonists n. Plural of saxophonist. • SAXOPHONIST n. one who plays the saxophone. |
| SESQUIOXIDES | • sesquioxides n. Plural of sesquioxide. • SESQUIOXIDE n. an oxide with three atoms of oxygen to two of the other constituent. |
| SPORTSPLEXES | • sportsplexes n. Plural of sportsplex. |
| UXORIOUSNESS | • uxoriousness n. Overt devotion or submissiveness to one’s wife. • UXORIOUSNESS n. the state of being uxorious. |
| XENOGLOSSIAS | • XENOGLOSSIA n. a person's knowledge of a language never studied, also XENOGLOSSY. |
| XENOGLOSSIES | • xenoglossies n. Plural of xenoglossy. • XENOGLOSSY n. a person's knowledge of a language never studied, also XENOGLOSSIA. |