To Give Yourself or Your Ideas a Shake
This page is the CodyCross answer for the clue below from Paris, Group 253, Puzzle 1 (French Revolution).
Question is: To Give Yourself or Your Ideas a Shake
and the answer is: BUCKUP
Word Meaning:
BUCK UP — (idiomatic) Cheer up; take courage; take heart.
Definitions from Wiktionary.