[count] 1 : a speech about a moral or religious subject that is usually given by a religious leader
▪ He preached/delivered/gave a sermon on the importance of kindness. 2 informal + usually disapproving : a serious talk about how someone should behave
▪ Dad gave me a sermon yesterday about doing my homework.
▪ He preached/delivered/gave a sermon on the importance of kindness.
▪ Dad gave me a sermon yesterday about doing my homework.





