| AUTOMOBILISM | • automobilism n. (Dated) The use of automobiles. • AUTOMOBILISM n. an interest in cars. |
| BREASTSUMMER | • breastsummer n. (Architecture) Alternative spelling of bressummer. • BREASTSUMMER n. a beam supporting the front of a building, also BRESSUMMER. |
| COULOMBMETER | • coulombmeter n. An instrument by which electricity can be measured in coulombs. • COULOMBMETER n. an instrument for measuring the amount of a substance released in electrolysis, also COULOMETER. |
| EMBARQUEMENT | • EMBARQUEMENT n. (Shakespeare) a placing under embargo. |
| ENCUMBERMENT | • encumberment n. Encumbrance. • ENCUMBERMENT n. the act of encumbering; the state of being encumbered. |
| IMMUTABILITY | • immutability n. The state or quality of being immutable; immutableness. • immutability n. (Computing) The state of being unchangeable in the memory after creation. • IMMUTABILITY n. the state of being immutable. |
| INCOMMUTABLE | • incommutable adj. Not commutable. • INCOMMUTABLE adj. that cannot be commuted or exchanged. |
| INCOMMUTABLY | • incommutably adv. In an incommutable manner. • INCOMMUTABLE adv. that cannot be commuted or exchanged. |
| MULTICHAMBER | • multichamber adj. Composed of multiple chambers. |
| MULTIPROBLEM | • multiproblem adj. Involving more than one problem. • MULTIPROBLEM adj. featuring many problems. |
| MUMBLETYPEGS | • MUMBLETYPEG n. a game of throwing knives to make them stick in the ground. |
| NOCTAMBULISM | • noctambulism n. (Rare) sleepwalking. • NOCTAMBULISM n. somnambulism. |
| SOMNAMBULANT | • somnambulant adj. Walking as if, or while, asleep; sleepwalking. • somnambulant n. A sleepwalker. • SOMNAMBULANT adj. having the habit of walking while asleep. |
| SOMNAMBULATE | • somnambulate v. (Intransitive) To walk while sleeping. • SOMNAMBULATE v. to walk when asleep. |
| SOMNAMBULIST | • somnambulist n. A person who walks about in their sleep; a sleepwalker. • SOMNAMBULIST n. a sleepwalker, also SOMNAMBULE. |
| SUBCOMMITTEE | • subcommittee n. A committee formed by an existing committee, comprising a subset of its members. • SUBCOMMITTEE n. a subdivision of a committee usually organized for a specific purpose. |
| SUBCOMMUNITY | • subcommunity n. A community that exists as part of a larger community. • SUBCOMMUNITY n. a distinct grouping within a community. |
| SUBMERGEMENT | • submergement n. The act of submerging. • SUBMERGEMENT n. the state of being submerged. |
| THINGUMMYBOB | • thingummybob n. Alternative form of thingamabob. • THINGUMMYBOB n. a whatsit, also THINGAMY, THINGAMYBOB, THINGAMYJIG, THINGUMABOB, THINGUMAJIG, THINGUMBOB, THINGUMMY, THINGUMMYJIG. |