undull

== English == === Etymology 1 === From Middle English undull, equivalent to un- (“not”) +‎ dull. ==== Adjective ==== undull (comparative more undull, superlative most undull) Not dull; sharp. === Etymology 2 === From un- +‎ dull. ==== Verb ==== undull (third-person singular simple present undulls, present participle undulling, simple past and past participle undulled) (transitive) To make less dull (various senses). === References === “undull”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.