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verb To act mature and responsible. This slang term is typically used humorously by young adults. Ugh, I can't adult today—I'm going back to bed.
slang The (sometimes daunting) task of acting mature and responsible. Usually used humorously by young adults. Does this mean I have to cook for myself now? I hate adulting. Adulting is the worst—as soon as I get paid, the money goes directly to bills.
See also: adult
large adult son
An oafish man prone to rambunctious behavior, despite having reached adulthood. The frequent subject of memes, the phrase is often linked to a family photo of American politician Mike Huckabee that includes his two literally large adult sons. Despite being 35 years old, my son is such a doofus. I can't believe I have a large adult son. My large adult sons just gave our dog a bath in the trunk of my car.
A person past middle age, perhaps (but not necessarily) elderly. Now that I'm an older adult, I have all these aches and pains that I never felt before. You don't have to speak loudly to them, you know—not all older adults have trouble hearing.