coactive

adjective

co·​ac·​tive ˌkō-ˈak-tiv 

variants or co-active

: acting in concurrence or together

coactive partners

coactively adverb

coactively searching for a solution

coactivity

ˌkō-akˈti-və-tē 

noun

or co-activity

plural coactivities or co-activities

And forget the parenting magazine advice that recommends folding laundry as a great co-activity.

—Jennie Sutherland

Word History

First Known Use

circa 1616, in the meaning defined above