co-sign
US /ˈkoʊˌsaɪn/
UK /ˈkoʊˌsaɪn/

1.
menandatangani bersama, menandatangani bersama-sama
to sign a document jointly with another person or persons
:
•
She asked her father to co-sign the loan application.
Dia meminta bapanya untuk menandatangani bersama permohonan pinjaman itu.
•
You need someone to co-sign if your credit score is low.
Anda memerlukan seseorang untuk menandatangani bersama jika skor kredit anda rendah.