I'll stay in festival for short time - it's more relaxed (6)

I believe the answer is:

easier

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'more relaxed' is the definition.
('easy' is associated in meaning with 'relaxed')

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

Can you help me to learn more?

(Other definitions for easier that I've seen before include "more like a piece of cake" , "Posing less difficulty" , "Requiring less effort" , "Less complicated" , "Less taxing" .)

I've seen this clue in The Independent.

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