Two fifth graders cried after sides lost. Uncanny! (5)

I believe the answer is:

eerie

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

I don't understand the remainder of the clue.

(Other definitions for eerie that I've seen before include "Weird and disturbing" , "Scary, weird" , "Ghostly" , "Unnatural" , "Sinister" .)

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

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