Crossword Genius

Talk spitefully about side with incisiveness (8)

Ross

I believe the answer is:

backbite

'talk spitefully about' is the definition.
(to backbite is to talk about someone maliciously)

'side with incisiveness' is the wordplay.
'side' becomes 'back' (back is a kind of side).
'with' means one lot of letters go next to another.
'incisiveness' becomes 'bite' (I've seen this in another clue).
'back'+'bite'='BACKBITE'

(Other definitions for backbite that I've seen before include "Say mean things" , "Say spiteful things about an absentee" , "Gossip maliciously" , "Speak unkindly of (someone) in their absence" , "Speak ill of (someone) in their absence" .)

I've seen this clue in The Times.
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