Each year, the Oxford English Dictionary names an international word of the year. This title is awarded based upon the word’s use during the past year, and how it reflects “the ethos, mood, or preoccupations of that particular year.”
This year’s title went to post-truth (read what this means).
One of the shortlisted words (considered, but not chosen) was…
adulting noun, informal
The practice of behaving in a way characteristic of a responsible adult, especially the accomplishment of mundane but necessary tasks.
The Urban dictionary defines it as the process of doing grown up things and hold responsibilities such as, a 9-5 job, a mortgage/rent, a car payment, or anything else that makes one think of grown ups. (Source)
This word is often associated with the struggle of millennials to grow up. Books and blogs have exploded on helping them overcome their apparent delayed development.
Here are three links that overview these three main developmental tasks.