Crossword Genius

Was shifty and naturally guarded (6)

Ross

I believe the answer is:

hedged

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

'guarded' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?

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

Can you help me to learn more?

(Other definitions for hedged that I've seen before include "Avoided making a decision or giving a clear answer" , "being naturally guarded" , "Avoided giving direct answer, being bounded" , "Acted evasively" , "Avoided giving direct answer, being fenced?" .)

I've seen this clue in The Globe and Mail.
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