| IMMOBILISMS | • immobilisms n. Plural of immobilism. • IMMOBILISM n. a political policy characterised by extreme lack of action. |
| IMMORALISMS | • immoralisms n. Plural of immoralism. • IMMORALISM n. rejection of morality. |
| MAHATMAISMS | • MAHATMAISM n. the state of being a mahatma. |
| MESOMERISMS | • mesomerisms n. Plural of mesomerism. • MESOMERISM n. in chemistry, resonance, a type of tautomerism. |
| METAMERISMS | • metamerisms n. Plural of metamerism. • METAMERISM n. a particular form of isomerism in which different groups are attached to the same central atom. |
| MINIMALISMS | • minimalisms n. Plural of minimalism. • MINIMALISM n. making do with as little as possible. |
| MUGWUMPISMS | • mugwumpisms n. Plural of mugwumpism. • MUGWUMPISM n. being a mugwump. |
| 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. |
| SYMMETALISM | • SYMMETALISM n. a system of coinage in which the unit of currency consists of a particular weight of an alloy of two or more metals, also SYMMETALLISM. |