1. the act of assigning or appointing someone to a position or task
Usage: formal
2. a secret meeting, especially between lovers
Usage: somewhat archaic

Examples

• The assignation of duties was completed by the committee chair.
• His assignation to the diplomatic post came as a surprise.
• The board announced the assignation of new department heads.
• She received her assignation to the overseas mission.
• The lovers arranged a secret assignation in the garden.
• Their clandestine assignation was discovered by her husband.