Confirm result's about right (6)
I believe the answer is:
ensure
'confirm' is the definition.
(thesaurus)
'result's about right' is the wordplay.
I cannot really understand how this works, but
'about' could be 're' (regarding) and 're' is found in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ensure that I've seen before include "Protect" , "Make certain, secure" , "Guarantee" , "Make certain, clinch" , "Make certain, confirm" .)