Insanely brief response to morning meeting proposal? (4)
I believe the answer is:
amok
'insanely brief response to morning meeting proposal?' is the definition.
I can't tell whether this defines the answer.
'insanely brief response to morning meeting' is the wordplay.
'insanely brief response' becomes 'ok' (I can't explain this - if you can you should believe this answer much more).
'to morning' becomes 'am' (as in ok:00 AM).
'meeting' means one lot of letters go next to another.
'ok' after 'am' is 'AMOK'.
Can you help me to learn more?
(Other definitions for amok that I've seen before include "crazy" , "Run thus to be wild and uncontrolled" , "Running wild" , "'Wildly, without self-control (4)'" , "Berserk" .)