1. Acting together in secret toward a fraudulent or illegal end
   - conniving

See also: collude, covert

• ritual dancing
• ritual killing
• ritualise
• ritualism
• ritualist
• ritualistic
• ritualistically
• ritualize
• ritually
• ritz
• ritzy
• rival
• rivalrous
• rivalry
• rive
• river
• River Acheron
• River Adige
• River Aire
• River Arno
• River Avon
• river basin
• river birch
• river blindness
• river boat