| ALTISSIMOS | • altissimos n. Plural of altissimo. • ALTISSIMO n. the octave commencing an octave above the treble clef. |
| ASYSTOLISM | • asystolism n. The state or symptoms characteristic of asystole. • ASYSTOLISM n. the state or symptoms characteristic of asystole. |
| CLASSMATES | • classmates n. Plural of classmate. • CLASSMATE n. one in the same class. |
| MASCULISTS | • masculists n. Plural of masculist. • MASCULIST n. an advocate of the rights of men. |
| MASTERLESS | • masterless adj. Lacking or deprived of a master. • MASTERLESS adj. destitute of a master or owner; ungoverned or ungovernable. |
| MATELASSES | • matelassés n. Plural of matelassé. • MATELASSE n. a jacquard fabric having a raised pattern, also MATELLASSE. |
| MESOBLASTS | • mesoblasts n. Plural of mesoblast. • MESOBLAST n. another name for the mesoderm, the middle germ layer of the embryo in early development. |
| MISTRESSLY | • mistressly adj. (Rare, obsolete) Pertaining to the mistress of a home or household. • mistressly adj. (Now rare) Characteristic of a woman who is very proficient in some skill or activity; masterful. • MISTRESSLY adj. like a mistress. |
| MOSSPLANTS | • MOSSPLANT n. a plant of moss. |
| SIMPLISTES | • SIMPLISTE n. (French) someone who tends to oversimplify. |
| SIMULCASTS | • simulcasts n. Plural of simulcast. • simulcasts v. Third-person singular simple present indicative form of simulcast. • SIMULCAST v. to broadcast simultaneously on radio and television. |
| SLALOMISTS | • slalomists n. Plural of slalomist. • SLALOMIST n. one who takes part in a slalom. |
| SLIMPSIEST | • slimpsiest adj. Superlative form of slimpsy: most slimpsy. • SLIMPSY adj. flimsy, also SLIMSY. |
| SPLITTISMS | • SPLITTISM n. advocating the withdrawal of a group from a large centralized body. |
| STREAMLESS | • streamless adj. Without streams of water. • STREAMLESS adj. destitute of streams, or of a stream, as a region of country, or a dry channel. |
| STYLITISMS | • STYLITISM n. the practice of being a stylite. |
| SUMMITLESS | • summitless adj. Without a summit. • SUMMITLESS adj. having no summit. |
| SYMBOLISTS | • symbolists n. Plural of symbolist. • SYMBOLIST n. a practitioner of symbolism, the use of symbols in literature or art. |
| SYSTEMLESS | • systemless adj. Lacking organised or systematic structure; without a system. • SYSTEMLESS adj. without a system. |