Input fell with new order producing more than enough (9)

I believe the answer is:

plentiful

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'enough' is the definition.
(thesaurus)

'input fell with new order producing more than' is the wordplay.
'input fell' anagrams to 'PLENTIFUL'.
However, I'm unsure how this is indicated.

Can you help me to learn more?

(Other definitions for plentiful that I've seen before include "Abundant - profuse" , "Productive" , "Abundant, copious" , "common" , "Existing in great quantities" .)

I've seen this clue in The Telegraph.

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