undull means not dull; sharp. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From Middle English undull, equivalent to un- (“not”) + dull.
verb
- To make less dull (various senses).“It is a most musicall Modulator of all Intelligibles by her inventive Variations, undulling their Grossenesse, and subliming it into more refined Acceptablenesse to our own, or others understandings.”
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