conspire
verb
[ kənˈspʌɪə ]
• make secret plans jointly to commit an unlawful or harmful act.
• "they conspired against him"
Similar:
plot,
hatch a plot,
form a conspiracy,
scheme,
plan,
lay plans,
intrigue,
collude,
connive,
collaborate,
consort,
machinate,
manoeuvre,
be/work hand in glove,
abet,
be an accessory,
be in cahoots,
cabal,
Origin:
late Middle English: from Old French conspirer, from Latin conspirare ‘agree, plot’, from con- ‘together with’ + spirare ‘breathe’.