Anger created by arson? (4)
I believe the answer is:
heat
'anger' is the definition.
(I've seen this in another clue)
'by arson?' is the wordplay.
I cannot quite see how this works, but
'by' could be 'at' and 'at' is located in the answer.
The remaining letters 'he' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'created' acts as a link.
Can you help me to learn more?
(Other definitions for heat that I've seen before include "Energy that caues a rise in temperature" , "Warm up" , "It's measured in therms" , "Hotness" , "brings out a sweat?" .)