名詞 copulative:

1. an equating verb (such as `be' or `become') that links the subject with the complement of a sentence
   同義詞：copula, linking verb

形容詞 copulative:

1. syntactically connecting sentences or elements of a sentence
   同義詞：connecting

cop.u.la.tive

adj.（形容詞）
Grammar
【語法】
Serving to connect coordinate words or clauses:
連系詞的：連接并列詞或從句的：
例句：
a copulative conjunction.
連系連接動詞

Serving as a copula:
系動詞的：起系詞作用的：
例句：
a copulative verb.
（連）系動詞

Of or relating to copulation.
交媾的：交媾的或與之有關(guān)
n.Grammar （名詞）【語法】
A copulative word or group of words.
并列連詞：連接并列詞或從句的詞或詞組

【引伸】
cop.ula.tively
adv.（副詞）