Didn't seriously mean that Jed was out for good (5)
I believe the answer is:
joked
'didn't seriously' is the definition.
I can't tell whether this defines the answer.
'that jed was out for good' is the wordplay.
I cannot really see how this works, but
'good' could be 'ok' and 'ok' is present in the answer.
'that jed' could be 'jed' and 'jed' is found in the remaining letters.
No letters remain.
This explanation may well be incorrect...
'mean' acts as a link.
Can you help me to learn more?
(Other definitions for joked that I've seen before include "Told amusing stories" , "Jested" , "Quipped" .)