Don't fail to exercise control (6)

I believe the answer is:

manage

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'control' is the definition.
(I know that manage is a more specific form of the action control)

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for manage that I've seen before include "Handle, oversee" , "Control, direct, run" , "Take control" , "Run, be in charge of" , "Be in charge of something" .)

I've seen this clue in The Irish News.

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