Fraudster acted extremely deceitful, with little sign of hesitation (7)

I believe the answer is:

diddler

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

'fraudster' is the definition.
I can't tell whether this defines the answer.

'acted extremely deceitful with little sign of hesitation' is the wordplay.
'acted' becomes 'did' (to do is to perform a particular action).
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'with' says to put letters next to each other.
'little sign of hesitation' becomes 'er' (short exclamation indicating hesitation).
'deceitful' with its middle taken out is 'dl'.
'did'+'dl'+'er'='DIDDLER'

Can you help me to learn more?

(Other definitions for diddler that I've seen before include "Swindler" , "Swindling person" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app