In a frenzy, but all right in the morning (4)
I believe the answer is:
amok
'in a frenzy' is the definition.
(I've seen this before)
'all right in the morning' is the wordplay.
I cannot really see how this works, but
'right' could be 'ok' (both are affirmative answers) and 'ok' is found within the answer.
'morning' could be 'am' (as in 12:00 AM) and 'am' is found within the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'but' is the link.
Can you help me to learn more?
(Other definitions for amok that I've seen before include "Run (disruptively out of control)" , "Going mad" , "Must run it" , "In an uncontrolled, often violent, way" , "Frenzied, running out of control" .)