The boy noticed the mistake, but said nothing about it.

Sindre Beyer, a former politician, noticed the mistake and shared the post on his account.

You mean that the frame-maker hung the thing upside down and Jeffrey never noticed the mistake?

Each time, Huang noticed the mistake and grabbed the wheel, steering it back into the correct lane.

Gino noticed the mistake after the paper had been glued to the walls, and decided against changing anything.

Fortunately no one noticed the mistake.

He called me "Clarice" the other day, and never noticed the mistake, and that's not my name, is it?'

"Oops," said Lucy, uncomfortably aware that she had proofread his story on the new rate and hadn't noticed the mistake.