Among the many things Millennials are supposed to have killed is the word “adult.”
For evidence of this, their critics look no further than the word “adulting,” which creates a verb out of what used to be a venerable and well-respected noun.
A typical usage of “adulting” might be something like “I’d love to stay late at work and fix all your computer problems, but I’m done adulting for today.”
The implication here is that “adult” has moved from a state of being to an activity, from a fact of growing up to a choice one makes depending on one’s whim or mood.