word of mouth

This soon spills over into the counterfeits sold in the unlicensed arena: Social media and word of mouth.

More than 500 workers turned up at the KIWA’s event, several hundred more than initially expected as word of the government program and the registration clinic spread by word of mouth.

So I took an old-school approach, piecing together my own trail through word of mouth, knocking on doors, and sending handwritten letters to potential sources.

I'm a linguist who studies "word of mouth," or what people tell each other about their experiences.

“You had to have a great positive first experience if you’re going to build the brand on word of mouth,” MacFarlane said.