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: talks down, talked down, talking down

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