Result is certain right away (5)
I believe the answer is:
issue
'result' is the definition.
(I've seen this before)
'is certain right away' is the wordplay.
'certain' becomes 'sure' (synonyms).
'right' becomes 'r' (common abbreviation).
'away' indicates named letters should be taken away.
'sure' with 'r' taken away is 'sue'.
'is'+'sue'='ISSUE'
(Other definitions for issue that I've seen before include "important point" , "Offspring; problem" , "Distribute for sale/use" , "The children to come forth" , "Supply" .)