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/ˌmɒnəʊˈmeɪnɪə/ · noun
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.
“There are no limits to the possibilities of monomania,” I answered. “There is the condition which the modern French psychologists have called the ‘idée fixe,’ which may be trifling in character, and accompanied by complete sanity in every other way. A man who had read deeply about Napoleon, or who had possibly received some hereditary family injury through the great war, might conceivably form such an ‘idée fixe’ and under its influence be capable of any fantastic outrage.”
Use monomania when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Monomania means Excessive interest or concentration on a singular object or subject..
Common synonyms include possession.
The opposite depends on the specific sense.
It was apparent to all but himself that what was once idle curiosity had become a monomania.
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