IPA: /ɪˈvɛntər/
KK: /ɪˈvɛntər/
A person or horse that participates in the sport of eventing, which includes dressage, cross-country, and show jumping.
The eventer showed great skill during the competition, impressing the judges with their performance.
Eventer → The word is formed from "event" (from Old French *evenement*, meaning occurrence or happening) and "-er" (meaning a person who). An eventer is a person who participates in or organizes events.
Think of someone who is involved in an 'occurrence' ('event') — the '-er' just means a person. An eventer is someone who takes part in events.