Not grounded yet - it’s still undecided (2,3,3)
I believe the answer is:
in the air
This clue could be a double definition.
'not grounded' is the first definition.
(I've seen this in another clue)
'undecided' is the second definition.
(I've seen this before)
'yet it's still' acts as a link.
I am not very happy about this link. Some or all of it may belong to one of the definitions.
Can you help me to learn more?
(Other definitions for in the air that I've seen before include "like oxygen?" , "Noticeable all around" , "Vaguely prevalent" , "Current, exerting an influence - may be floating" , "About to happen" .)