Maadult 

A very mature adult

Taylor is a maadult and her mom should see her that way

Maadult by Ally10202 January 26, 2019

Madulthood 

The state of being youngish. A term to define the joyful insanity inherent in the Millennial generation, which comes of age during the early twenty-first century, an era of dramatic global change.

Now in their twenties, the Millennial generation explores the newfound freedoms and travails of Madulthood. Madulthood is the best time in a person's life for them to figure their shit out.

Madulthood by MadRim November 13, 2014

Madult 

An adult who decides not to do an activity in which they would normally do

Nichole decided to madult and not do the laundry today.

Madult by Oobmadult28 July 7, 2018