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bairner

Someone who acts younger than their age — a grown adult with the emotional temperament of a small child.

ˈbɛɹnɚ145 viewsLast reviewed Jun 11, 2026+ Add a definition
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#1·May 2, 2026Globalcasual

Someone who acts younger than their age — a grown adult with the emotional temperament of a small child. Rooted in Scottish dialect slang, used affectionately or mockingly to describe an immature person who still throws fits or wants constant coddling.

Don't let him plan the trip, he's a total bairner when things go wrong.
Source: Slangora editorial
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