coact

verb

co·​act ˌkō-ˈakt 

variants or co-act

coacted or co-acted; coacting or co-acting

intransitive verb

: to act or work together

coacted on the proposal

A ring seal apparatus for high temperature sealing includes a … second ring adapted to coact with the first ring.

—News Bites US Markets

Word History

First Known Use

circa 1616, in the meaning defined above