Right apart, like below (7)

I believe the answer is:

asunder

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'right apart' is the definition.
'asunder' can be an answer for 'apart' (I've seen this in another clue). I am not certain of the 'right' bit.

'like below' is the wordplay.
'like' becomes 'as'.
'below' becomes 'under' (synonyms).
'as'+'under'='ASUNDER'

Can you help me to learn more?

(Other definitions for asunder that I've seen before include "(Broken) apart" , "bits?" , "going to pieces" , "separately" , "Sad rune (anag.)" .)

I've seen this clue in The Irish News.

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