Mock short Disney film's boring plot - Dumbo's debut (9)
I believe the answer is:
simulated
'mock' is the definition.
(thesaurus)
'short disney film's boring plot dumbo's debut' is the wordplay.
'short' means to remove the last letter.
'disney film' becomes 'Mulan' (Mulan is a Disney film).
'boring' is an insertion indicator (some letters must 'bore' a hole into other letters).
'plot' becomes 'site' (as in a plot of land).
'dumbo's debut' becomes 'd' (I can't explain this - if you can you should believe this answer much more).
'mulan' with its final letter taken off is 'mula'.
'mula' put into 'site' is 'simulate'.
'simulate'+'d'='SIMULATED'
Can you help me to learn more?
(Other definitions for simulated that I've seen before include "Feigned, imitated" , "Pretended" .)