Tentative (8)
I believe the answer is:
hesitant
'tentative' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for hesitant that I've seen before include "Reluctant, feeling indecision" , "Not quick" , "Reluctant (to speak, act)" , "Pausing - undecided" , "The Saint? (anag)" .)