Deprive of probity? (3)
I believe the answer is:
rob
'deprive' is the definition.
(I've seen this in another clue)
'of probity?' is the wordplay.
'of' says the answer is hidden in the clue.
'ROB' can be found hidden inside 'probity'.
(Other definitions for rob that I've seen before include "Nick" , "Steal or purloin" , "Unlawfully take property from (someone)" , "sack" , "Steal from (someone)" .)