If you say that someone is small-minded , you are critical of them because they have fixed opinions and are unwilling to change them or to think about more general subjects.
...their small-minded preoccupation with making money.
ADJ [ disapproval ]
SMALL-MINDED
Meaning of SMALL-MINDED in English
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006