conspire

1 to engage in a secret plan to accomplish evil or unlawful ends <conspired to replace the leader with someone more easily influenced> Synonyms collude, compass, connive, plot, contrive, intrigue, machinate, put up, schemeRelated Words counterplot; brew, concoct, cook (up), devise, hatch; engineer, jockey, maneuver, manipulate; design, frame, lay out, map, plan, shape

2 to participate or assist in a joint effort to accomplish an end <foul weather and airline foul-ups seemed to be conspiring to ruin our vacation> Synonyms band (together), collaborate, concert, concur, conjoin, cooperate, join, league, team (up), uniteRelated Words connive; affiliate, ally, associate, combine, confederate, hang together, interface