Entry Word: cooperate

Function: verb

Meaning: 1 to participate or assist in a joint effort to accomplish an end <conservation groups cooperated with state authorities to find a humane way to manage the areaʼs overpopulation of deer>

Synonyms collaborate, concert, join, team (up)

Related Words connive, conspire; affiliate, ally, associate, band, combine, confederate, league, unite

Phrases play ball

2 to form or enter into an association that furthers the interests of its members <several industrialized nations cooperated in a trade agreement to reduce or eliminate tariffs> — see ally