Words at Play : Top 10 User-Submitted Words, Vol. 6
Definition:
an adult who behaves like a child
Example:
"But alpha male has been superceded by omega male, the under-achieving, low-testosterone kidult who lounges at the other end of the blokey spectrum, playing computer games and watching Lost." Kevin Courtney, Irish Times, July 30, 2011
Submitted by:
Yuri Stoma, Russia