Missing some obvious answers (4)

I believe the answer is:

sans

'missing' is the definition.

'some obvious answers' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'SANS' is hidden in the letters of 'obvious answers'.

(Other definitions for sans that I've seen before include "rooms for treating sick pupils" , "Without (Fr.)" , "Without (literary)" .)

I've seen this clue in The Guardian.

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