ascetic

The word 'ascetic' has its origins in the ancient Greek practice of athletic training and disciplined exercise, known as askēsis. This concept was adopted by early Christian hermits and monks, who applied the same term to their rigorous spiritual training and self-denial. Over time, the meaning shifted from physical training to the practice of extreme self-discipline, particularly the renunciation of worldly pleasures for religious or spiritual goals. Thus, the literal notion of "exercise" evolved into the modern abstract sense of rigorous self-denial and austerity.

Structure: ascet (to exercise) + ic (adjective suffix) ascet originates from Greek askētēs, meaning "one who exercises" or "monk," from askein, "to work, exercise, train." ic is an adjective-forming suffix from Greek -ikos, via Latin -icus.