In two minds (4)
(Other definitions for uncertain that I've seen before include "up in the air" , "Unsure" , "Lacking confidence" , "Not at all sure or decided" , "dubious" .)
'in two minds' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for undecided that I've seen before include "Irresolute" , "Not certain" , "Dithering" , "In two minds" , "Still up in the air?" .)
'in two minds' is the definition.
(both can mean indecisive)
This is the entire clue.
(Other definitions for torn that I've seen before include "Rent, ripped" , "Removed forcibly" , "Having rips" , "Divided" , "Ripped - undecided" .)