undullness

== English == === Etymology === From undull +‎ -ness. === Noun === undullness (uncountable) The quality of not being dull. 2005, Study Group on Eighteenth-Century Russia, Newsletter (issues 33-36, page 14) […] a psychologic attitude required for creative activity – a condition including such qualities like curiosity, undullness of the sense organs, craving for impressions, readiness for the search of creative ideas and solutions.