Outrage, Beyond the Fringe? (6)

I believe the answer is:

offend

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'outrage' is the definition.
(I know that outrage can be written as offend)

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

Can you help me to learn more?

(Other definitions for offend that I've seen before include "Cause displeasure to, insult" , "Act in disregard of the law" , "disgust" , "Cause affront or do wrong" , "Cause displeasure or hurt, be nasty towards" .)

I've seen this clue in The Guardian.

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