Is more important than daggy manners on air? (9)

I believe the answer is:

outweighs

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'is more important' is the definition.
(to outweigh is to be more important than)

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

(Other definitions for outweighs that I've seen before include "Compensates for" , "Has priority over" , "tips the balance" .)

I've seen this clue in the Sydney Morning Herald.

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