Be indecisive (6)
I believe the answer is:
dither
'be indecisive' is the definition.
(to dither is to avoid making a decision)
This is the entire clue.
(Other definitions for dither that I've seen before include "Waver, vacillate" , "Hesitate, haver" , "Agitate indecisively" , "Hesitate indecisively, vacillate" , "Confuse" .)