talk up

verb3

1. •
   To talk about (something or someone) to make it seem as good as possible or to draw positive attention to it.

   • The restaurant had been talked up way too much, that it left me somewhat disappointed.
   • Charlie's been talking up Robbie in an attempt to set him up with Lucy.
2. •
   To talk louder.
3. •
   To speak in a plain and candid way, or with bold impudence.