Insignificant second insults (7)

I believe the answer is:

slights

'insults' is the definition.
(a slight is an insult or affront)

'insignificant second' is the wordplay.
'insignificant' becomes ''slight' (I've seen this in another clue).
'second' becomes 's' (common abbreviation).
'slight'+'s'='SLIGHTS'

(Another definition for slights that I've seen is " Shows indifference towards".)

I've seen this clue in The Mirror.

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