- (no longer in technical use) a psychosis characterized by thoughts confined to one idea or group of ideas.
- an inordinate or obsessive zeal for or interest in a single thing, idea, subject, or the like.
Origin of monomania
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for monomaniacal
He added that he had “fairly decent, monomaniacal plans to finish [the project] with due care and all-available skill.”What We Really Know about J.D. Salinger
September 9, 2013
“We would talk about the [acting] process endlessly and he was monomaniacal about the work,” she says in the film.John Cazale, A Godfather of Acting
May 31, 2010
- an excessive mental preoccupation with one thing, idea, etc
Word Origin and History for monomaniacal
Online Etymology Dictionary, © 2010 Douglas Harper
- Pathological obsession with one idea or subject, as in paranoia.