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
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

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
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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