I. co·ac·tive (ˈ)kō|aktiv adjective
Etymology: coact (I) + -ive
: serving to compel or constrain : of compulsory nature : restrictive
any coactive power of the civil kind — William Warburton
• co·ac·tive·ly adverb
• co·ac·tiv·i·ty ˌkōakˈtivəd.ē noun -es
II. co·active (ˈ)kō+ adjective
Etymology: co- + active
: acting in concurrence or together
• co·actively “+ adverb
• co·activity “+ noun