Exhausted inside left at gala (6)
I believe the answer is:
effete
'exhausted' is the definition.
(I've seen this before)
'inside left at gala' is the wordplay.
'inside' indicates the central letters.
'at' means one lot of letters go next to another.
'gala' becomes 'fete' (I've seen this in another clue).
The middle letters of 'left' are 'ef'.
'ef'+'fete'='EFFETE'
(Other definitions for effete that I've seen before include "Worn-out, decadent" , "Over-refined, exhausted" , "Spent; degenerate" , "Feeble, having lost vitality" , "Enfeebled" .)