What is the origin of "deadly" as "excellent" in Irish and Australian English?

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Chapters
00:00 What Is The Origin Of &Quot;Deadly&Quot; As &Quot;Excellent&Quot; In Irish And Australian English?
00:33 Accepted Answer Score 10
02:09 Answer 2 Score 0
02:24 Thank you

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Full question
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Tags
#etymology #australianenglish #hibernoenglish

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