preach about (something)

preach about (something)

1. To proclaim or lecture about something in a sermon. The priest preached about the sin of coveting other people's possessions. He was preaching about God's message of love and peace.
2. To offer a stern, moralistic, typically condescending lecture about something. I wish you would stop preaching about being fiscally responsible, Dad. I get it. My mother always preaches about the dangers of drugs and drinking, so I've never wanted to try them.
See also: preach

preach about something

to give a moral or stern discourse on something. Please don't preach about the evils of fried food. I like the stuff, and people eat it all the time and don't die! She was preaching about the value of a fat-free diet.
See also: preach