The most common and most likely answer to this crossword clue is the 12 letter word PRODUCTIVITY
I've seen this crossword clue in Independent
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Buddy explains!
The straight part
We know that "output" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case output = productivity.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does PRODUCTIVITY mean?
PRODUCTIVITY noun- The state of being productive, fertile or efficient
- The rate at which goods or services are produced by a standard population of workers
- The rate at which crops are grown on a standard area of land