Crossword Genius

Showed no respect and ate greedily (7)

Ross

I believe the answer is:

scoffed

I'm a little stuck... Click here to teach me more about this clue!

'showed' is the definition.
The answer and definition can be both to do with communicating as well as being past participle verbs.
Perhaps you can see a link between them that I don't see?

'no respect and ate greedily' is the wordplay.
I cannot really understand how this works, but
'no' could be 'o' (O resembles 0) and 'o' is present in the answer.
'ate' could be 'fed' ('feed' can be a synonym of 'eat') and 'fed' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for scoffed that I've seen before include "Expressed scorn" , "Jeered; ate" , "Mocked" , "Laughed at with contempt and derision" , "Showed no respect - ate greedily" .)

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