Crossword Genius

Deceit to get a financial centre working again (9)

Ross

I believe the answer is:

mendacity

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

'deceit to get a financial centre working again' is the definition.
I can't tell whether this defines the answer.

'deceit to get a financial centre' is the wordplay.
'deceit' becomes 'mend' (I can't justify this - if you can you should believe this answer much more).
'to get' says to put letters next to each other.
'financial centre' becomes 'city'.
'mend'+'a'+'city'='MENDACITY'

Can you help me to learn more?

(Other definitions for mendacity that I've seen before include "Lying" , "Untruthfulness" , "Quality or habit of telling lies or being deceitful" .)

I've seen this clue in The Guardian.
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