Where "Sook" Comes From
"Sook" likely comes from an old English dialect use of "suck" describing a young, weak animal — specifically a suckling lamb still dependent on its mother — which was gradually extended to describe a person acting weak, clingy, or overly sensitive. The Oxford English Dictionary's earliest evidence for the word in Australian English is from 1910, in the Melbourne Advocate.
The word travelled into both Australian and New Zealand English and softened over time into its familiar everyday sense: a crybaby, or someone who makes an outsized fuss over a minor setback. It's mild enough to use on a child having a tantrum or an adult grizzling about nothing, without carrying much real sting.
Source:
"Don't be such a sook, it's just a scratch."
How Aussies Actually Use It
Used across the country for anyone who complains excessively over something minor — "don't be such a sook, it's just a scratch" is classic, no-nonsense toughening-up talk.
It's common between mates, parents and kids, or teammates, usually delivered with a mix of exasperation and affection rather than genuine cruelty.
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