Crossword Genius

The low fellow has to rage wildly! (6)

Ross

I believe the answer is:

toerag

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'the low fellow' is the definition.
I know nothing about this answer so I can't tell whether this works.

'to rage wildly' is the wordplay.
'wildly' is an anagram indicator.
'rage' is an anagram of 'erag'.
'to'+'erag'='TOERAG'

'has' acts as a link.

Can you help me to learn more?

(Other definitions for toerag that I've seen before include "despicable sort" , "Scamp" , "Despicable person (slang)" , "O, great! (anag) -- a worthless fellow" , "Despicable chap" .)

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