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Nutritionist at uni says eating anchovy toppings could cause queasiness (6)

Ross

I believe the answer is:

nausea

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'queasiness' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

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(Other definitions for nausea that I've seen before include "Feeling of imminent sickness, may be caused by sea" , "Squeamishness" , "Malady" , "Seasickness" , "Feeling of revulsion" .)

I've seen this clue in the Sydney Morning Herald.
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