| ACRITARCHS | • acritarchs n. Plural of acritarch. • ACRITARCH n. any of a group of fossil one-celled marine organisms. |
| ARCHAISERS | • archaisers n. Plural of archaiser. • ARCHAISER n. one who archaises, also ARCHAIZER. |
| ARCHAIZERS | • archaizers n. Plural of archaizer. • ARCHAIZER n. one who archaizes, also ARCHAISER. |
| ARCHICARPS | • archicarps n. Plural of archicarp. • ARCHICARP n. a female reproductive structure in certain types of fungi. |
| ARCHOSAURS | • archosaurs n. Plural of archosaur. • ARCHOSAUR n. any of a subclass of reptiles comprising pterosaurs, dinosaurs and crocodilians. |
| ARCHRIVALS | • archrivals n. Plural of archrival. • arch-rivals n. Plural of arch-rival. • arch␣rivals n. Plural of arch rival. |
| ARCOGRAPHS | • arcographs n. Plural of arcograph. • ARCOGRAPH n. an instrument for drawing arcs without using a central point. |
| ARRACACHAS | • arracachas n. Plural of arracacha. • ARRACACHA n. (Quechua) an umbelliferous South American food-plant with edible tubers. |
| CARDSHARPS | • cardsharps n. Plural of cardsharp. • card-sharps n. Plural of card-sharp. • card␣sharps n. Plural of card sharp. |
| CARSHARING | • carsharing v. Present participle of carshare. • CARSHARING n. the act of sharing a car for transport. |
| CATARRHOUS | • catarrhous adj. Catarrhal. • CATARRHOUS adj. of or like catarrh, also CATARRHAL. |
| CHAPARRALS | • chaparrals n. Plural of chaparral. • CHAPARRAL n. (Spanish) a thicket of low evergreen oaks. |
| CHARACTERS | • characters n. Plural of character. • CHARACTER v. (archaic) to engrave, inscribe. |
| CHARIVARIS | • charivaris n. Plural of charivari. • CHARIVARI n. (French) a cacophonous mock-serenade performed for a wedding. |
| CHARREADAS | • charreadas n. Plural of charreada. • CHARREADA n. (Spanish) a Mexican entertainment involving competitive riding and herding events. |
| MATRIARCHS | • matriarchs n. Plural of matriarch. • MATRIARCH n. a woman who is the head of a family. |
| PATRIARCHS | • patriarchs n. Plural of patriarch. • PATRIARCH n. a man who is the head of a family. |
| PRACHARAKS | • pracharaks n. Plural of pracharak. • PRACHARAK n. (Hindi) in India, a person appointed to propagate a cause through personal contacts, meetings etc. |
| RANCHERIAS | • rancherias n. Plural of rancheria. • RANCHERIA n. (Spanish) in Spanish America and the western US, a collection of Indian huts; a place or house where a number of rancheros live. |