Set securely (Var.)
Else clues• Entrench
• Fix firmly
• Fix firmly (Var.)
• Fix in the mind
• Fix permanently
• Fix permanently (Var.)
• Fix well
• Implant
• Insert, as a code
• Plant
• Plant deeply
• Plant deeply (Var.)
• Plant securely: Var.
• Send into battle, in a way
• Set
• Stick in the ground
• Surround tightly