conjunctive

(noun) an uninflected function word that serves to conjoin words or phrases or clauses or sentences. Synonyms: conjunction, connective, continuative.

(adj) serving or tending to connect. Synonyms: conjunctive (vs. disjunctive).

(adj) involving the joint activity of two or more. Synonyms: concerted, conjunct, cooperative. Examples: "Concerted action." "The conjunct influence of fire and strong wind." "The conjunctive focus of political opposition." "A cooperative effort." "A united effort." "Joint military activities."