IPA: /əˈraɪvər/
KK: /əˈraɪvər/
A person who comes to a place, especially after traveling or moving from another location.
The arriver at the party was greeted with cheers and applause.
Arriver is derived from the Old French 'arriver', which means to arrive or come to a destination. The word itself is formed from 'a-' (meaning to) and 'river' (meaning to reach or come). Thus, 'arriver' means to come to a place or reach a destination.
Think of 'a-' meaning to and 'river' as reaching a destination — that's why arriver means to come to a place.