indifference
noun [ U ] uk/ɪnˈdɪf.ər.əns/ us/ɪnˈdɪf.ɚ.əns/
C2 不感兴趣的;不关心的，冷淡的
lack of interest in someone or something
Many native speakers of a language show indifference to/towards grammatical points. 许多人都不关注其母语的语法。
His attitude was one of bored indifference. 他的态度既不耐烦又漠不关心。