Merriam-Webster's Word of the Day for July 22, 2026, is "stalwart." Stalwart is a formal adjective describing someone or something as very loyal and dedicated. It also signifies being physically or mentally strong. An example of its usage is a stalwart civil rights supporter. The term can also apply to a strong defense in sports. Arbour is presented as a stalwart defender of women's rights. The word has ancient origins, stemming from the Old English "stǣlwierthe," meaning "serviceable." Stalwart conveys outstanding strength and vigor in body, mind, or spirit. Traits like loyalty, steadfastness, capability, and dependability are associated with stalwarts. Old oak trees are often described as stalwart due to their stature and endurance. A closing pitcher can be considered stalwart for their mental fortitude under pressure.