In duplicate
Definition 1 of 2
Pro Tip 1/3Exact Copies
It means both copies should be identical, with no variations between them.
Sign both letters in duplicate.
Pro Tip 2/3Paperwork Protocol
'In duplicate' is often used in official or formal paperwork requirements.
Submit your application form in duplicate.
Pro Tip 3/3Legal Importance
Creating documents in duplicate is common in legal contexts for record-keeping.
The contract is signed in duplicate.
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