A person who complains frequently or is easily upset; someone overly sensitive or whiny.
Origins uncertain, possibly from dialectal English or derived from 'suck' in the sense of being pathetic. Used colloquially in British and Australian English to describe someone who fusses or cries easily.
The word 'sook' is regional slang that tells you something interesting about how communities create their own insults—what one place calls a 'sook,' another might call a 'baby' or 'crybaby,' showing how the same human behavior gets different names based on where you grow up.
Regional slang (particularly Canadian/Australian) for crybaby or sensitive person, carrying implicit feminization of emotional expression and weakness-coding.
Avoid using to dismiss emotional expression; if employing colloquially, be aware of gendered contempt embedded in the term.
["sensitive person","person who needs support"]
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