It's important to show half your wage went missing (6)

I believe the answer is:

urgent

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'it's important' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for urgent that I've seen before include "Pressing, burning" , "To be done asap" , "Needing early action" , "demanding speedy action" , "Demanding immediate attention" .)

I've seen this clue in The Guardian.

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