sermonize
🇺🇸
/ˈsɜːrmənaɪz/
🇬🇧
/ˈsɜːmənaɪz/
to give a lecture on moral or religious subjects, often in a way that is not interesting or wanted
The teacher sermonized about the importance of honesty to the bored students.
老师向无聊的学生布道诚实的重要性。