21 across
Feel
reasonably
well
or
berserk
(4)
Feel reasonably well or berserk (4)
hints
0
checks
0
hints
The definition is at the end of the clue.
How the clue works
The definition is berserk, giving you a word meaning in a frenzy. For the wordplay, take AM (as in "I am feeling...") and stick OK ("reasonably well") right after it.