Crossword Genius

Friends is returning with immediate impact? Absolutely (4-4)

Ross

I believe the answer is:

slap-bang

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'absolutely' is the definition.
Both the answer and definition are adverbs. Perhaps they are linked in a way I don't understand?

'friends is returning with immediate impact?' is the wordplay.
'friends' becomes 'pals' (pal is a kind of friend).
'is returning' is a reversal indicator.
'with' means one lot of letters go next to another.
'immediate impact?' becomes 'bang' (bang is a kind of impact. I am not sure about the 'immediate' bit.).
'pals' back-to-front is 'slap'.
'slap'+'bang'='SLAP-BANG'

Can you help me to learn more?

(Other definitions for slap-bang that I've seen before include "Absolutely (in the middle)" , "right?" , "All at once - violently" , "Suddenly - directly" .)

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