Climax (4)
'climax' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for acme that I've seen before include "Height of perfection" , "Summit, crowning point" , "Highest level or degree attainable" , "Culminating point" , "Highest point of excellence or achievement" .)
'climax' is the definition.
(I know that climax can be written as culmination)
This is the entire clue.
(Other definitions for culmination that I've seen before include "Climax" , "Climactic point" , "very end, unfortunately" .)