An archaic or dialectal term meaning to clarify or clear something, or to make bright.
From Old English or Middle English, related to Latin clarus (clear). The verb form declined in usage as 'clarify' and 'clear' became the standard terms.
Archaic verbs like 'clarre' vanish from English when more convenient synonyms emerge. It's like evolution—'clarify' was simply a better adapted word for the job, so 'clarre' went extinct from most people's vocabularies.
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