Perseverate Definition

pər-sĕvə-rāt

perseverated, perseverates, perseverating

verb

To experience or display perseveration.

Webster's New World

Describing the behavior, generally displayed by those with various developmental disabilities, of extraordinary, exclusive and lasting obsession to a detail or occurrence others consider minor.

Wiktionary

To repeat or continue a pattern.

Wiktionary

Origin of Perseverate

Specialized word derived from persevere +"Ž -ate.

From Wiktionary
Back-formation from perseveration

From American Heritage Dictionary of the English Language, 5th Edition