observer
US /əbˈzɝː.vɚ/
UK /əbˈzɝː.vɚ/

1.
2.
pengamat
a person who attends a meeting or event without participating in it
:
•
She attended the conference as an observer, not a speaker.
Dia menghadiri konferensi sebagai pengamat, bukan pembicara.
•
International observers were present during the elections.
Pengamat internasional hadir selama pemilihan.