Eventer is a term that is commonly used in the context of equestrianism and refers to a rider who competes in the sport of eventing. Eventing is a combined competition that comprises three disciplines: dressage, show jumping, and cross country. The rider must demonstrate their horsemanship skills, athleticism, and performance abilities across all three disciplines. Synonyms for "eventer" include event rider, three-day eventer, eventing competitor, and combined training rider. These terms all refer to a rider who takes part in eventing competitions and highlights the importance of their versatility in mastering different aspects of the sport.