monomania

Noun
Synonyms: possession

WordNet 3.0

Noun (1)

  1. a mania restricted to one thing or ideaSynonyms: possession
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Webster's Dictionary (GCIDE)

Monomania \Mon`o*ma"ni*a\, n. [Mono- + mania.] Derangement of the mind in regard of a single subject only; also, such a concentration of interest upon one particular subject or train of ideas to show mental derangement. [1913 Webster]

Syn: Insanity; madness; alienation; aberration; derangement; mania. See Insanity. [1913 Webster]

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