Actors with one take displaying discipline (9)
I believe the answer is:
castigate
'discipline' is the definition.
(thesaurus)
'actors with one take' is the wordplay.
'actors' becomes 'cast' (group of actors).
'with' means one lot of letters go next to another.
'one' becomes 'I' (Roman numeral).
'take' becomes 'gate' (I've seen this in another clue).
'cast'+'i'+'gate'='CASTIGATE'
'displaying' acts as a link.
(Other definitions for castigate that I've seen before include "Chastise - tacit sage (anag)" , "Blast" , "Slap down" , "Take a piece out of" , "Censure severely" .)