Keep an eye on Takeaway for Dopey (8)

I believe the answer is:

mindless

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'dopey' is the definition.
Both the definition and answer are adjectives. Perhaps they are linked in a way I don't understand?

I don't understand the rest of the clue.

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(Other definitions for mindless that I've seen before include "Acting unthinkingly" , "(Of activity) repetitive and simple" , "Stupid" , "mechanical" , "Without thought or care" .)

I've seen this clue in the Irish Times.

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