Oxford English Dictionary:
deputize
(also deputise)
VERB
[NO OBJECT]
• 1 Temporarily act or speak on behalf of someone else.
‘the post-holder is required to deputize for the manager in their absence’
More example sentences
o ‘Next year, when new players will have to be signed to deputise for those away on World Cup duty, they could be on short-term contracts or even ‘pay as you go.’’
o ‘He will chair five and deputise for the Prime Minister on seven of the 44 committees created yesterday.’
o ‘Danny is likely to deputise for him in the televised game.’
o ‘You're the most experienced person in the team, so when I'm off can you deputise for me and go to the meetings’
o ‘Adrian will also deputise for Helen in her absence and will also lead on key major editorial projects, assigned by the Director of News.’
o ‘He will report to the Editor in Chief, and will also deputise for him in his absence.’
o ‘He will now be more determined than ever to insist that, when his colleague departs, he will deputise for the first minister in every sense of the word.’
o ‘A Government spokesperson, however, said the Minister appointed a replacement minister who was more than able to deputise for him.’