Wry, smooth and in charge (6)
I believe the answer is:
ironic
'wry' is the definition.
('ironic' can be a synonym of 'wry')
'smooth and in charge' is the wordplay.
'smooth' becomes 'iron' (I've seen this before).
'and' says to put letters next to each other.
'in charge' becomes 'ic'.
'iron'+'ic'='IRONIC'
(Other definitions for ironic that I've seen before include "Double-edged" , "Strange and perverse" , "Type of situation where one is mocked by fate" , "Wryly satirical" , "Causing wry amusement through an unexpected outcome" .)