__ Up, Don't Take Things So Seriously
This page is the CodyCross answer for the clue below from Fauna and Flora, Group 168, Puzzle 2 (Genetic Modification).
Question is: __ Up, Don't Take Things So Seriously
and the answer is: LIGHTEN
Word Meaning:
LIGHTEN — (transitive) To make brighter or clearer; to illuminate.
Definitions from Wiktionary.