WordWeb Online

1. Belittle through talk
    
2. Speak in a condescending manner, as if to a child
   "He talks down to her"
    
3. Direct and control (the flight of an aeroplane during landing) via radio
   "the control tower talked down the plane whose pilot fell ill"

Derived forms: talking down, talked down, talks down

Type of: belittle, denigrate, derogate, direct, minimise [Brit], minimize, speak, talk