Individual copies turned over with speed (8)
'individual' is the definition.
'copies turned over with speed' is the wordplay.
'copies' becomes 'apes' ('ape' can be a synonym of 'copy').
'turned over' says the letters should be written in reverse.
'with' says to put letters next to each other.
'speed' becomes 'rate' (rate is a kind of speed**).
'apes' reversed gives 'sepa'.
'sepa'+'rate'='SEPARATE'
(Other definitions for separate that I've seen before include "Divide, keep apart" , "Individual and distinct" , "Come apart" , "Distinct, not joined" , "Move" .)
But I've got no explanation for this one! Could you help me understand?
(Other definitions for delaware that I've seen before include "Atlantic state of the US" , "NE US state" , "state of the east" , "Award eel to US state" , "American state, capital Dover" .)