Crossword Genius

Rising thus: Shrek? (4)

Ross

I believe the answer is:

ogre

'shrek?' is the definition.

'rising thus' is the wordplay.
'rising' is a reversal indicator (going up in a down clue).
'thus' becomes 'ergo' (I've seen this before).
'ergo' written backwards gives 'OGRE'.

(Other definitions for ogre that I've seen before include "Monster, troll" , "Fairy-tale creature" , "Bugbear" , "Giant: monster" , "man-eater" .)

I've seen this clue in The Guardian.
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