This is the 816th most frequent Greek word.
υπέγραψε
"Υπέγραψε" means "signed" in English.
In this sentence, 'υπέγραψε' is used to indicate that someone (Peter) has signed a document.
Ο Πέτρος υπέγραψε το συμβόλαιο.
Peter signed the contract.
In this context, 'υπέγραψε' refers to signing something as part of an act of autographing.
Εκείνη υπέγραψε υπογεγραμμένα αντίγραφα για τους θαυμαστές της.
She signed autographed copies for her fans.
Here, 'υπέγραψε' shows that an organization has formally endorsed an agreement through signing.