What is the meaning of the word "unapproachable"?

Definitions:

  1. discouraging intimacies copy to clipboard adjective
    • Although the star was right next to me in the pub, they seemed totally unapproachable. copy to clipboard
  2. inaccessibly located or situated copy to clipboard adjective
    • I live in an unapproachable castle high in the mountains. copy to clipboard

Synonyms: