Deborah Kerr? Anthony Quinn? Some wandering in search of adventure? (6)

I believe the answer is:

errant

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

'in search of adventure?' is the definition.
(I've seen this in another clue)

'deborah kerr? anthony quinn? some wandering' is the wordplay.
'ERRANT' is hidden within the letters.
But, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for errant that I've seen before include "Wrong" , "Off the mark, wandering" , "Misbehaving" , "Like many a knight" , "looking for adventure" .)

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

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