The quality or state of dripping, trickling, or being wet from drops (Scottish and dialect).
From 'dreepy' (adjective) + '-ness'. The '-ness' suffix creates an abstract noun from the adjective form of the Scottish verb 'dreep'.
This is so localized and rare that most English speakers have never encountered it—it's a window into the rich vocabulary of Scottish communities for describing their famously damp weather.
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