The term 'Skilled Rider' can be defined as a HORSEMAN, which is an 8 letter word. A HORSEMAN is someone who is skilled in riding horses and is knowledgeable about horse care. They are responsible for the training, care, and management of horses. Horsemen may also compete in equestrian events such as show jumping, dressage, and eventing. Horsemen must have a deep understanding of horse behavior and be able to communicate effectively with their horses.