American Heritage Dictionary
(3)
Century Dictionary
GNU Webster's 1913
WordNet
(2)
Elsewhere on the web
Kevin's worried about Grace, the older daughter, and her perseveration on apocalypses, pandemics and the like.— Television Without Pity
In psychology this would fall pretty damn close to perseveration.— Countercurrents.org
* Serotonergic antidepressants are used to control stereotypic behaviours, perseveration, and mood swings— Entertainment Weekly's PopWatch
At its worst, we examine the conclusions of the recently declassified Nicoll Report that provide the basis for a rich discussion of mirror imaging, perseveration, transferred judgment, etc., all made worse by group think.— Adrian Monck
Almost all successful writers exhibit behaviors which would be unhealthy perseveration in the everyday world, but are critical success factors in publishing.— jlake.com

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