Horrifying sprawled in his gore (7)

I believe the answer is:

ogreish

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'horrifying sprawled in' is the definition.
The definition suggests an adjective which matches the answer.

'his gore' is the wordplay.
'his gore' anagrams to 'OGREISH'.
However, I am unsure how this is indicated.

Can you help me to learn more?

(Other definitions for ogreish that I've seen before include "Ugly" , "Monstrous, misshapen, cruel" , "Fearsome" , "Like a cruel monster" , "Terrifyingly big" .)

I've seen this clue in The Globe and Mail.

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