Still less than seventeen (4)

I believe the answer is:

even

'still' is the definition.
(synonyms)

'less than seventeen' is the wordplay.
'less' indicates the answer is hidden within the clue (the clue less some of the letters in it).
'EVEN' is hidden within 'than seventeen'.

(Other definitions for even that I've seen before include "Like 2, 4 or 6, say" , "Peaceful" , "Commensurate" , "Placid - not easily angered" , "Like half the numbers" .)

I've seen this clue in the Evening Standard.

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