An informal or endearing term for a blanket, especially one used by children.
From blanket + -y (diminutive or informal suffix, similar to -ie). This playful suffix creates affectionate versions of words, especially in child-directed language.
Security blankets have an actual psychological effect on children's stress levels, and the fact that we have a cute word 'blanky' shows how language itself becomes part of childhood comfort—it's softer to ask for your 'blanky' than a 'blanket,' and that softness might actually lower cortisol.
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