Clue: Dearie me! The French are to barrack (6)
Answer: HECKLE
Explanation: Dearie me! The French are to barrack (6)
HECK ("dearie me!") + LE 
This clue doesn't work for me, because of the "are" which is necessary for the surface, but is superfluous as far as the clue is concerned, and actually misleading as "the French are" could lead to ES or EST.