willpower
UK: ˈwɪlpaʊə | US: ˈwɪlpaʊər
n. the ability to control one's own actions, impulses, or emotions; strong determination.
The word "willpower" combines "will," derived from Old English willan (to wish or desire), with "power," from Old French poeir (to be able) and Latin potere (to be powerful). The fusion reflects the concept of harnessing inner desire ("will") as a force ("power") to achieve self-control or goals. This compound structure emerged in English by the 19th century, emphasizing psychological resilience.
She relied on sheer willpower to finish the marathon despite exhaustion.
Lacking willpower, he gave in to the temptation of eating junk food.
Meditation can strengthen your willpower over time.
His willpower impressed everyone as he quit smoking cold turkey.
The athlete’s willpower turned setbacks into motivation.