Adulting is an informal term to describe behavior that is seen as responsible and grown-up. This behavior often involves meeting the mundane demands of independent and professional living, such as paying bills and running errands (dictionary.com). Adulting is a fairly new gerund that stems from the use of the word adult as a verb. A gerund is a verb form ending in ing that acts as a noun. … It stems from the fairly recent use of the word adult as a verb, related words are adults, adulted (grammarist.com). The practice of behaving in a way characteristic of a responsible adult, especially the accomplishment of mundane but necessary tasks (oxforddictionaries,com).
