Scottish and Northern English dialect term meaning childlike, naive, or foolish; sometimes relating to children.
Derived from 'bairn' (Scottish/Northern English word for child, from Old English 'bearn'), with the '-ie' diminutive or descriptive suffix creating an adjectival form.
Scottish dialect words like 'bainie' preserve Old English vocabulary that vanished from standard English—'bairn' for child is still used in place names and regional speech across Britain.
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