Keen to buck a trend (6)

I believe the answer is:

ardent

I'm a little stuck... Click here to teach me more about this clue!

'keen' is the definition.
(I've seen this before)

'buck a trend' is the wordplay.
'a trend' can be anagrammed to 'ARDENT'.
However, I'm unsure how the anagram is indicated.

'to' acts as a link.

Can you help me to learn more?

(Other definitions for ardent that I've seen before include "passion" , "Burning, passionate" , "Warm and loving" , "Burning with emotion" , "Enthusiastic, eager" .)

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

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