Definition: Acheilous, also known as "fertility" or "stamina," refers to a state of intense concentration, determination, or endurance that one has in pursuit of something or achieving an objective. It involves focusing on a goal, overcoming challenges, and maintaining mental fortitude under pressure. In terms of its definition: - Acheilous is defined as the quality of being strong, vigorous, and powerful. - It comes from the Greek word "achΔla", which means "force" or "strength." - It indicates an intense effort to reach a goal with strength and determination. Acheilous can also be used metaphorically to describe someone who is deeply focused on their work, especially in terms of achieving something important.