preach

The word "preach" first meant to give a religious sermon, and that is still its main meaning. A preacher speaks to a congregation, offering spiritual teaching and guidance. In this sense, the word is closely tied to churches, religion, and public messages about faith.

Over time, the word also came to describe speaking very strongly about any belief, rule, or way of living. Someone may preach about honesty, exercise, safety, or politics. In that wider use, it often means the speaker is not simply sharing an opinion but trying to persuade other people to agree or behave a certain way. Because of that, the word can sometimes sound slightly negative, especially when the advice feels repeated, moralizing, or unwanted.

The act of preaching is not always formal or religious. A parent might preach about being careful on the road. A friend might preach about saving money. Someone might even joke, "I could preach about this all day," when they care deeply about a subject and want everyone else to care too. Related forms like "preachy" describe speech that feels too serious or too eager to tell others how to live.

So the word can describe both a formal religious sermon and a strong attempt to guide or persuade others in everyday life. It usually carries the idea of belief, seriousness, and a wish to influence how other people think or act.