delice merak

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Турецкий язык - Английский Язык
monomania
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
the unreasonable pursuit of one idea
a very strong interest in one particular idea or subject which prevents you from thinking about anything else
a mania restricted to one thing or idea
{i} obsession with one thing or one idea; enthusiasm for one thing or idea
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