This is the 3853rd most frequent Arabic word.
المتواجدين
"Those who are present."
In this sentence, "المتواجدين" refers to those present at the party, describing the attendees or the people who were there.
كان جميع المتواجدين في الحفل مستمتعين بالموسيقى.
All attendees at the party were enjoying the music.
Here, "المتواجدين" is used to indicate people who are physically present in the classroom.
قدّم المعلّم المساعدة لجميع المتواجدين في الصف.
The teacher offered assistance to everyone present in the classroom.
"المتواجدين" in this context specifies the individuals who are located or existent in the building at the time.