Eleanor's coworkers had to come up with a ruse to get her to the restaurant for her surprise birthday lunch.
An example of a ruse is when you lie to someone to get them out of the house before a surprise party.
Origin of ruseFrench from Middle French from Old French reuser, to deceive from Classical Latin recusare, to be reluctant, refuse: see recusant
Origin of ruseMiddle English detour, dodging from Old French from ruser to drive back ; see rush 1.
From Middle English, from Old French ruse (“evasive movements of a pursued animal"), with conflicting Latin origins.