Meredith has no time for that type of mentality (4)

I believe the answer is:

herd

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'type of mentality' is the definition.
(I've seen this in another clue)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for herd that I've seen before include "Group of animals of one kind" , "13 Down group" , "Group of animals, cattle, say" , "Drove" , "Host" .)

I've seen this clue in The Irish Times.

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