Conclude a loss of temper could be hazardous (8)
I believe the answer is:
endanger
'conclude a loss' is the definition.
I can't judge whether this definition defines the answer.
'temper could be hazardous' is the wordplay.
I cannot really understand how this works, but
'temper' could be 'anger' and 'anger' is present in the answer.
'be' could be 'end' (ending is a kind of being) and 'end' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'of' acts as a link.
Can you help me to learn more?
(Other definitions for endanger that I've seen before include "To put one at risk" , "Put in harm's way" , "Threaten" , "Imperil" , "Hazard" .)