Left-leaning lefty, minister in speech (6)
I believe the answer is:
verbal
'in speech' is the definition.
(I've seen this before)
'left-leaning lefty minister' is the wordplay.
'left-leaning' says the letters should be written backwards (letters written right to left).
'lefty' becomes 'lab' (I can't justify this - if you can you should give a lot more credence to this answer).
'minister' becomes 'rev' (short for Reverend, a church minister).
'lab'+'rev'='labrev'
'labrev' reversed gives 'VERBAL'.
Can you help me to learn more?
(Other definitions for verbal that I've seen before include "statement to police" , "Word of mouth" , "Communicated in words" , "Expressed in words" , "Spoken, oral" .)