Still reaching for the stars during theatre night (5)
I believe the answer is:
'still' is the definition.
'for the stars during theatre night' is the wordplay.
'INERT' is hidden backwards in amongst the letters.
But, I am not sure how this is indicated.
'reaching' is the link.
Can you help me to learn more?
(Other definitions for inert that I've seen before include "'Not moving, lifeless (5)'" , "like nitrogen" , "Chem. non-reactive" , "Disinclined to act" , "Leaden" .)