Without planning, due for shake-up, games company caught short (10)

I believe the answer is:

unintended

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'short' is the definition.
Both the answer and definition are adjectives. Perhaps you can see a link between them that I can't see?

I can't explain the rest of the clue.

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(Other definitions for unintended that I've seen before include "Not meant" , "Not deliberate" , "Not planned" , "by mistake" .)

I've seen this clue in The Times.

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