| MESOSAURS | • mesosaurs n. Plural of mesosaur. • MESOSAUR n. an extinct aquatic reptile. |
| MESSIEURS | • messieurs n. Plural of monsieur. • Messieurs n. Plural of Monsieur. • MONSIEUR n. (French) a French title of courtesy for a man. |
| MISTRUSTS | • mistrusts v. Third-person singular simple present indicative form of mistrust. • MISTRUST v. to have no trust in, also DISTRUST. |
| MOSASAURS | • mosasaurs n. Plural of mosasaur. • MOSASAUR n. a gigantic Cretaceous fossil pythonomorph reptile, also MOSASAURUS. |
| OSSARIUMS | • OSSARIUM n. (Latin) a depository for the bones of the dead, also OSSUARY. |
| REASSUMES | • reassumes v. Third-person singular simple present indicative form of reassume. • REASSUME v. to assume again. |
| RUMNESSES | • RUMNESS n. the state of being odd, queer. |
| SARGASSUM | • sargassum n. Any of many brown algae of the genus Sargassum; gulfweed. • Sargassum prop.n. A taxonomic genus within the family Sargassaceae – a common brown alga that makes up some common seaweed. • SARGASSUM n. (Latin) a genus of algae including the gulfweed, also SARGASSO. |
| SUBMERSES | • submerses v. Third-person singular simple present indicative form of submerse. • SUBMERSE v. to place below the surface of a liquid, also SUBMERGE. |
| SUBSTORMS | • substorms n. Plural of substorm. • SUBSTORM n. activity that disrupts the magnetic field of a planet. |
| SURMISALS | • surmisals n. Plural of surmisal. • SURMISAL n. a guess. |
| SURMISERS | • surmisers n. Plural of surmiser. • SURMISER n. one who surmises. |
| TRISMUSES | • TRISMUS n. (Latin) a tetanic spasm of the muscles of the jaw, aka lockjaw. |