Icosathlon is a word that is rarely used in everyday language and refers to a sporting event consisting of twenty different track and field events. However, there are a number of synonyms that can be used instead of icosathlon to make it easier to understand and communicate. One synonym is a decathlon, which is a ten-event competition featuring different track and field events. Another synonym is a heptathlon, which is a seven-event competition featuring track and field events. Additionally, a pentathlon is a five-event competition consisting of track and field events, and a triathlon consists of three events. Using these synonyms can make it easier to explain the event to those who are less familiar with the term icosathlon.