Synonyms of 'in advance'
▷ See advance
The subject of the talk is announced a week in advance.
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You go on ahead. I'll catch you up later.
If you do something beforehand, you do it earlier than a particular event.
How could she tell beforehand that I was going to go out?
Thesaurus for in advance from the Collins English Thesaurus
If you do something in advance , you do it before a particular date or event.