Member gets over state of uncertainty (5)
I believe the answer is:
limbo
'state of uncertainty' is the definition.
(I've seen this before)
'member gets over' is the wordplay.
'member' becomes 'limb' (limb is a kind of member).
'gets' is a charade indicator (letters next to each other).
'over' becomes 'o' (cricket abbreviation).
'limb'+'o'='LIMBO'
(Other definitions for limbo that I've seen before include "Where things are lost or forgotten or being awaited" , "neither here nor there" , "West Indian dance - state of uncertainty" , "passing under bar?" , "Uncertain time awaiting decision" .)