Origins
The word 'athlete' entered English in the 1520s from Latin 'athleta,' which was borrowed from Greek 'athlētēs,' meaning 'a competitor in games, a contestant, one who strives for a prize.' The Greek noun derives from the verb 'athlein' (to compete for a prize), itself from the noun 'athlos' or 'aethlon' (a contest, a struggle, a feat of endurance, a prize). The deeper etymology of 'athlos' is uncertain: some scholars have proposed a connection to PIE *wedh- (to push, to strike), while others treat it as a pre-Greek substrate word.
In ancient Greece, the word 'athlētēs' carried specific and elevated connotations. It did not refer to anyone who exercised or played games. An athlētēs was a competitor in the great Panhellenic festivals — the Olympic Games at Olympia (founded traditionally in 776 BCE), the Pythian Games at Delphi, the Nemean Games at Nemea, and the Isthmian Games at Corinth. These were sacred events, tied to religious festivals, and the athletes who competed in them trained for years under specialized coaches. The rewards were olive wreaths, laurel crowns, and undying fame — but also substantial material benefits, as victorious athletes were fed at public expense and celebrated in victory odes by poets like Pindar.
The Greek concept of 'athlos' (contest, struggle) pervades modern sporting vocabulary. The suffix '-athlon' appears in 'biathlon' (a two-event contest), 'triathlon' (three events), 'pentathlon' (five events, from Greek 'pente,' five), 'heptathlon' (seven events), and 'decathlon' (ten events, from Greek 'deka,' ten). Each of these compounds literally names a multi-struggle — a series of contests compressed into a single competition. The word 'athletics' itself, denoting the general practice of competitive sports, means simply 'the art of contesting.'
Greek Origins
The ancient Greek athlete occupied an ambivalent cultural position. On one hand, athletic victory was considered a supreme expression of human excellence ('arete'), and Olympic champions were honored as near-divine figures. On the other hand, philosophers like Xenophanes and Euripides criticized the excessive honor paid to athletes at the expense of intellectual achievement. Xenophanes complained that a man who could run fast or throw far received more civic honors than a sage who could counsel the city wisely — a tension between physical and intellectual achievement that persists in modern culture.
The Latin adoption of 'athleta' carried the word into the vocabulary of the Roman Empire, where it was applied to professional fighters and competitors in the Roman games. The Christian tradition reinterpreted the word metaphorically: Paul's first letter to the Corinthians compares the Christian life to an athletic contest ('Do you not know that in a race all the runners run, but only one gets the prize? Run in such a way as to get the prize'). The phrase 'athleta Christi' (athlete of Christ) was used for saints and martyrs who endured suffering as a spiritual contest, extending the Greek 'athlos' from the stadium to the arena of faith.
In modern English, 'athlete' has broadened considerably from its Greek origins. It now encompasses any person who engages in competitive physical activity, from Olympic sprinters to weekend joggers, from professional footballers to amateur tennis players. The word 'athletic' has further generalized to describe any physically fit or well-built person, regardless of competitive activity. This semantic broadening has diluted the original intensity of the Greek term — the sense of extreme, prize-driven struggle that made the 'athlētēs' a figure apart from ordinary mortals.
Legacy
The condition commonly known as 'athlete's foot' (tinea pedis) — a fungal infection of the feet — earned its colloquial name in the 1920s because the warm, damp conditions of communal changing rooms and swimming pools made athletes particularly susceptible. The name is etymologically redundant in an amusing way: the athlete's foot is the foot of one who struggles, afflicted by an additional, unwanted struggle against a parasitic fungus.