Crossword Genius

It's nothing for half the family to be unctuous (4)

Ross

I believe the answer is:

oily

'be unctuous' is the definition.
(I've seen this in another clue)

'it's nothing for half the family' is the wordplay.
'it's nothing' becomes 'O' (looks like zero - 0).
'for' is a charade indicator (letters next to each other).
'half the' suggests halving the letters.
'family' cut in half is 'ily'.
'o'+'ily'='OILY'

'to' acts as a link.

(Other definitions for oily that I've seen before include "covered in grease" , "Smooth; like lubricant" , "Oleaginous" , "Smarmy" , "Covered in lubricant" .)

I've seen this clue in the Evening Standard.
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