A cunning snare is not so daft! (5)

I believe the answer is:

saner

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

'not so daft' is the definition.
I can't judge whether this definition defines the answer.

'a cunning snare' is the wordplay.
'a cunning' is an anagram indicator.
'snare' anagrammed gives 'SANER'.

'is' acts as a link.

Can you help me to learn more?

(Other definitions for saner that I've seen before include "Less mad" , "less as hatter?" .)

I've seen this clue in the Evening Standard.

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