Crossword Genius

Get up to terrible increase in salary (5)

Ross

I believe the answer is:

arise

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

'get up' is the definition.
(synonyms)

'terrible increase in salary' is the wordplay.
I cannot really understand how this works, but
'increase' could be 'rise' (rise is a kind of increase) and 'rise' is located in the answer.
A single letter 'a' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

'to' acts as a link.

Can you help me to learn more?

(Other definitions for arise that I've seen before include "Get up or come up" , "Spring - get up" , "Turn up" , "Emerge" , "Happen" .)

I've seen this clue in The Mirror.
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