Cut expenditure — on comedies possibly (10)
I believe the answer is:
economised
'cut expenditure' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives can occasionally define each other.
'on comedies possibly' is the wordplay.
'possibly' is an anagram indicator.
'on'+'comedies'='oncomedies'
'oncomedies' with letters rearranged gives 'ECONOMISED'.
Can you help me to learn more?
(Other definitions for economised that I've seen before include "Did husband" , "No comedies (anag.)" .)