know better

1. Be able to recognize something as wrong or not possible, as in Mary should know better than to leave her child alone in the house, or Try to get in without a ticket? You know better than that. [c. 1700]

Example Sentences

Meghan McCain and Roseanne Barr know better than most what it’s like to feel forced out of a job on the ABC airwaves.

From Salon

The Echo reported that Caroline Goodwin KC, defence counsel for Morgan, told the judge that the post was in her analysis "appalling, outrageous and egregious" and that Jenrick "should know better".

From BBC

But there are those who submit and those who enable, including people who should know better.

From Salon

Slot will know better than anyone that he, as well as his expensively reassembled side, will be viewed through a completely different prism this season.

From BBC

Protose was a meat substitute of wheat gluten and peanuts, cooked up by the food reformer Dr. John Kellogg, the fellow whose name you know better from a line of sometimes quite sugary cereals.

From Los Angeles Times