Copula (linguistics) - Wikipedia In linguistics, a copula ( ˈkɒpjələ ; pl : copulas or copulae; abbreviated cop) is a word or phrase that links the subject of a sentence to a subject complement, such as the word "is" in the sentence "The sky is blue" or the phrase was not being in the sentence "It was not being cooperative "
copula - WordReference. com Dictionary of English copula ˈkɒpjʊlə n ( pl -las, -lae -ˌliː ) a verb, such as be, seem, or taste, that is used merely to identify or link the subject with the complement of a sentence