Crossword Genius

With false promises to pay the debt, egg to come over (8)

Ross

I believe the answer is:

spurious

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

'with false' is the definition.
'spurious' can be an answer for 'false' (I've seen this before). I'm not sure about the 'with' bit.

'promises to pay the debt egg to come over' is the wordplay.
I cannot really understand how this works, but
'promises' could be 'ious' (promises to pay a debt) and 'ious' is located in the answer.
'egg' could be 'spur' (I've seen this before) and 'spur' is found within the answer.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for spurious that I've seen before include "Bogus" , "deceitful!" , "Forged" , "Not genuine or authentic" , "Plausible, but false" .)

I've seen this clue in the Evening Standard.
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