Pressure in heavy defeats lifted daze (6)
I believe the answer is:
stupor
'daze' is the definition.
(I know that daze can be written as stupor)
'pressure in heavy defeats lifted' is the wordplay.
'pressure' becomes 'p' (abbreviation).
'in' means one lot of letters goes inside another.
'heavy defeats' becomes 'routs' (routing is a kind of defeating. I am not sure about the 'heavy' bit.).
'lifted' is a reversal indicator (going up in down clue).
'p' placed into 'routs' is 'roputs'.
'roputs' written backwards gives 'STUPOR'.
Can you help me to learn more?
(Other definitions for stupor that I've seen before include "Stupefaction, daze" , "Semi-conscious state" , "State of lethargy" , "Dazed, unconscious, state" , "State of near insensibility" .)