monomaniac
Focused on one thing above all othersFocused on one thing above all others.
UK/ˌmɒnəʊˈmeɪnɪæk/US/ˌmɑnoʊˈmeɪnɪæk/
» Karl is an egocentric monomaniac.
Meaning
1 sensesFocused on one thing above all others.
Examples
1 sentencesKarl is an egocentric monomaniac.