| ALUMIUMS | • ALUMIUM n. (obsolete) aluminium, as first named by Sir Humphrey Davy, also ALUMINIUM, ALUMINUM. |
| CRUMBUMS | • crumbums n. Plural of crumbum. • CRUMBUM n. a despicable person. |
| HUMDRUMS | • humdrums n. Plural of humdrum. • HUMDRUM n. a dull boring person. |
| HUMMAUMS | • hummaums n. Plural of hummaum. • HUMMAUM n. (Arabic) a Turkish bath, also HAMMAM, HUMMUM. |
| HUMMUSES | • hummuses n. Plural of hummus. • HUMMUS n. (Turkish) a Middle Eastern hors d'oeuvre of pureed chickpea and sesame oil, also HOMMOS, HOUMMOS, HOUMOUS, HOUMUS, HUMOUSES. |
| HUMSTRUM | • humstrum n. An instrument out of tune or rudely constructed. • humstrum n. A hurdy-gurdy. • humstrum n. (Uncountable) Music badly played. |
| MASURIUM | • masurium n. (Obsolete) The metallic element technetium. • MASURIUM n. a name proposed for element number 43, now called technetium. |
| MUGWUMPS | • mugwumps n. Plural of mugwump. • mugwumps v. Third-person singular simple present indicative form of mugwump. • MUGWUMP n. (Native American) a bolter from the Republican party in 1884; a political independent. |
| MULMULLS | • mulmulls n. Plural of mulmull. • MULMULL n. (Hindi) a fine, soft muslin, also MULMUL. |
| MUONIUMS | • muoniums n. Plural of muonium. • MUONIUM n. an electron and a positive muon bound together. |
| PLUMBUMS | • PLUMBUM n. (obsolete) lead. |
| SIMULIUM | • Simulium prop.n. A taxonomic genus within the family Simuliidae – certain black flies transmitting diseases such as onchocerciasis. • SIMULIUM n. a small black bloodsucking fly. |
| SLUMGUMS | • slumgums n. Plural of slumgum. • SLUMGUM n. the residue remaining after honey is extracted from a honeycomb. |
| SUPREMUM | • supremum n. (Set theory) (real analysis): Given a subset X of R, the smallest real number that is ≥ every element… • SUPREMUM n. in maths, a maximum bound. |
| UNSUMMED | • unsummed adj. Not summed. • UNSUMMED adj. unaccounted. |