An inclination to hypocritical speech (4)
I believe the answer is:
cant
I believe this clue is a double definition.
'an inclination' is the first definition.
(I've seen this before)
'hypocritical speech' is the second definition.
(I've seen this before)
'to' acts as a link.
(Other definitions for cant that I've seen before include "Pious platitudes -- jargon" , "tilt" , "lean over" , "Stock phrases made nonsensical by endless repetition" , "Pious claptrap" .)