| ACESULFAMES | • acesulfames n. Plural of acesulfame. |
| DAMSELFLIES | • damselflies n. Plural of damselfly. • DAMSELFLY n. an insect of the order Odonata, resembling the dragonfly. |
| DISULFIRAMS | • disulfirams n. Plural of disulfiram. • DISULFIRAM n. a compound used in the treatment of alcoholism. |
| FACSIMILIST | • facsimilist n. One who produces facsimiles. • FACSIMILIST n. one who makes facsimiles. |
| FACTUALISMS | • factualisms n. Plural of factualism. • FACTUALISM n. the quality of being factual. |
| FEDERALISMS | • federalisms n. Plural of federalism. • FEDERALISM n. the principles of Federalists or of federal union. |
| FORMALISERS | • formalisers n. Plural of formaliser. • FORMALISER n. one who formalises, also FORMALIZER. |
| HARMFULNESS | • harmfulness n. The characteristic of being harmful. • HARMFULNESS n. the state of being harmful. |
| MACROFOSSIL | • macrofossil n. (Paleontology) Any fossil large enough to be examined without a microscope. • MACROFOSSIL n. a fossil large enough to be seen with the naked eye. |
| MALFEASANTS | • malfeasants n. Plural of malfeasant. • MALFEASANT n. (French) one who does wrong. |
| MISCLASSIFY | • misclassify v. To classify incorrectly. • MISCLASSIFY v. to classify wrongly. |
| SEMIFORMALS | • semiformals n. Plural of semiformal. |
| SMIFLIGATES | • SMIFLIGATE v. Charles Dickens's nonce word for to spiflicate. |
| STOMACHFULS | • stomachfuls n. Plural of stomachful. • STOMACHFUL n. the contents of a stomach. |
| SUBFAMILIES | • subfamilies n. Plural of subfamily. • SUBFAMILY n. a taxonomic division of a family, of one or more genera. |