WordReference Random House Unabridged Dictionary of American English © 2026
co•ac•tive1
(kō ak′tiv),USA pronunciation adj.
co•ac′tive•ly, adv.
co′ac•tiv′i•ty, n.
co•ac•tive2 (kō ak′tiv),USA pronunciation adj.
co•ac′tive•ly, adv.
co′ac•tiv′i•ty, n.
- compulsory;
coercive.
- coact(ion)1 + -ive 1590–1600
co′ac•tiv′i•ty, n.
co•ac•tive2 (kō ak′tiv),USA pronunciation adj.
- acting together.
- co- + active 1590–1600
co′ac•tiv′i•ty, n.
'coactive' also found in these entries (note: many are not synonyms or translations):