1. to appoint someone to act as a deputy or substitute; to delegate authority to someone
Usage: British spelling; American English uses 'deputize'; transitive verb
2. to act as a deputy; to serve in someone's place
Usage: British spelling; American English uses 'deputize'; intransitive verb

Examples

• The manager deputised her assistant to handle the meeting while she was away.
• He was asked to deputise for the director during the conference.
• The principal deputised several teachers to supervise the examination.
• She will deputise as team leader next week.
• The company deputised an experienced employee to oversee the new project.
• When the ambassador fell ill, his deputy was deputised to attend the summit.