Russian-English translations for незыблемый

• firm
  Its good to have a firm grip when shaking hands
  a firm believer; a firm friend; a firm adherent
  firm flesh; firm muscles, firm wood; firm land (i.e. not soft and marshy)
• stable
  There were stalls for fourteen horses in the squires stables
  He was in a stable relationship
  a stable government
• steadfast
• unshakable