Period of One's Life Post-18
This page is the CodyCross answer for the clue below from World of Books, Group 292, Puzzle 2 (Academic Publishing).
Question is: Period of One's Life Post-18
and the answer is: ADULTHOOD
Word Meaning:
ADULTHOOD — The state or condition, for humans and other animals, of physical and psychological maturity: being an adult.
Definitions from Wiktionary.