monomania.
Excessive interest or concentration on a singular object or subject.
Meaning & usage
Excessive interest or concentration on a singular object or subject.
It was apparent to all but himself that what was once idle curiosity had become a monomania.
A pathological obsession with one person, thing or idea.
Where this word comes from
Either: * Formed in English as mono- + mania; * From the French monomanie; or, * From the Modern Latin monomania.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.