Snob not initially involved in smut (5)

I believe the answer is:

snoot

'snob' is the definition.
(thesaurus)

'not initially involved in smut' is the wordplay.
'initially' says to take the initial letters.
'involved in' indicates putting letters inside.
'smut' becomes 'soot' (I've seen this before).
The initial letter of 'not' is 'n'.
'n' placed into 'soot' is 'SNOOT'.

I've seen this clue in the Sydney Morning Herald.

Want a hint initially instead of a full solution? Install my app