Monstrous giant's head bagged by hero is hideous (7)
I believe the answer is:
ogreish
'monstrous' is the definition.
(I've seen this before)
'giant's head bagged by hero is hideous' is the wordplay.
I cannot quite understand how this works, but
'is' is within the answer.
'giant' could be 'ogre' (ogre is a kind of giant) and 'ogre' is located in the answer.
A single letter 'h' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for ogreish that I've seen before include "Like a cruel monster" , "Monstrous, misshapen, cruel" , "Ugly" , "Looking like a fiend" , "Fearsome" .)