Ati

Ati or Ati Yoga (shin tu rnal 'byor) — third of the three inner tantras; emphasizes, according to Jamgon Kongtrul the First, the view that liberation is attained through growing accustomed to insight into the nature of primordial enlightenment, free from accepting and rejecting, hope and fear. The more common word for Ati Yoga nowadays is 'Dzogchen,' the Great Perfection.