Definition of "copular" []

• In grammar and logic, relating to or of the nature of a copula.

The Century Dictionary (Public Domain)

• "In the Oxford English Grammar, Sidney Greenbaum writes: "If the copular verb is BE and if the subject predicative identifies the subject, the subject and subject predicative can change places.""
• "For the grammar geeks out there, I'll quote Algeo's British or American English on the topic, "A group of copular verbs (...) have predominantly adjectival complements in common-core English, but also have nominal subject complements in British more frequently than in American.""