Crossword Genius

Wild otter undeniably let go (4,1,5,3,2)

Ross

I believe the answer is:

turn a blind eye to

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

'let go' is the definition.
Although both the answer and definition are verbs in their base form, I can't understand how they can define each other.

'wild otter undeniably' is the wordplay.
'wild' indicates an anagram.
'otter'+'undeniably'='otterundeniably'
'otterundeniably' anagrammed gives 'TURN A BLIND EYE TO'.

Can you help me to learn more?

(Other definitions for turn a blind eye to that I've seen before include "overlook" , "Ignore" .)

I've seen this clue in The Daily Express.
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