| AMMONIACUMS | • AMMONIACUM n. gum ammoniac. |
| COMMUNALISM | • communalism n. The communal ownership of property. • communalism n. Any social system based around a community. • communalism n. (India) stoking conflict or discrimination based on religious identity. |
| IMMOMENTOUS | • immomentous adj. Not momentous; unimportant; insignificant. • IMMOMENTOUS adj. of no value, trifling, also IMMOMENT. |
| IMMUREMENTS | • immurements n. Plural of immurement. • IMMUREMENT n. the act of immuring, or the state of being immured. |
| MAMMIFEROUS | • mammiferous adj. Mammalian. • mammiferous adj. (Anatomy) Having mammae, or (humorous) breasts. • MAMMIFEROUS adj. having breasts. |
| MEMORANDUMS | • memorandums n. Plural of memorandum. • MEMORANDUM n. (Latin) a note to help the memory. |
| MENISPERMUM | • Menispermum prop.n. A taxonomic genus within the family Menispermaceae – moonseeds. • MENISPERMUM n. any plant of the moonseed genus Menispermum. |
| MUGWUMPISMS | • mugwumpisms n. Plural of mugwumpism. • MUGWUMPISM n. being a mugwump. |
| MULTIMEMBER | • multimember adj. (Politics, of a district) Having more than one member (political representative). • MULTIMEMBER adj. having many members. |
| MUMBLEMENTS | • mumblements n. Plural of mumblement. • MUMBLEMENT n. (Carlyle) mumbling speech. |
| MUMPSIMUSES | • mumpsimuses n. Plural of mumpsimus. • MUMPSIMUS n. an erroneous word or spelling that, through long usage, has become absorbed into the language; an incorrect manuscript reading blindly adhered to by some scholar. |
| SIMILLIMUMS | • SIMILLIMUM n. a remedy chosen for the symptoms it emulates. |
| SUBMINIMUMS | • subminimums n. Plural of subminimum. |
| SUMMERTIMES | • summertimes n. Plural of summertime. • SUMMERTIME n. the time during which it is summer. |