Had an inkling (6)
I believe the answer is:
sensed
'had an inkling' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sensed that I've seen before include "Became aware through mental perception or intuition" , "Felt, tasted, etc" , "'Felt, perceived (6)'" , "Felt, had mental impression" , "Became vaguely aware of (something)" .)