This is the 9740th most frequent Turkish word.
arkadaşlarınca
"By/according to their friends."
The word 'arkadaşlarınca' shows an association, that the event was arranged by friends.
Arkadaşlarınca düzenlenen bu etkinlik çok eğlenceliydi.
This event organized by your friends was very fun.
Here, 'arkadaşlarınca' indicates an evaluation or judgment made by friends.
Bu karar, arkadaşlarınca mantıklı bulundu.
This decision was found reasonable by your friends.
'Arkadaşlarınca' represents the source of provision, in this case, support given by friends.