No longer a priest? Fabulous — was really good! (9)

I believe the answer is:

defrocked

'no longer a priest?' is the definition.
(a priest might be defrocked)

'fabulous was really good' is the wordplay.
'fabulous' becomes 'def' (def can informally mean excellent).
'was really good' becomes 'rocked' ('that rocks!' means 'that's really good!').
'def'+'rocked'='DEFROCKED'

(Another definition for defrocked that I've seen is " Deposed from priesthood".)

I've seen this clue in The Guardian.

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