Answers which may be dispensed with (7)
I believe the answer is:
retorts
'answers' is the definition.
(I know this)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for retorts that I've seen before include "Sharp replies or rejoinders" , "Makes witty or angry reply" , "laboratory equipment" , "Counters" .)