bìdìng
梵語阿鞞跋致Avaivartikā，譯言不退轉，又翻必定。不退轉大道，必定入於涅槃之位也。大智度論九十三曰：「阿鞞跋致即是必定。」十住毘婆沙論易行品曰：「人能念是佛無量力功德即時入必定。」
Certainly, assuredly; tr. of 阿鞞跋致 avaivartika, intp. as 不退轉 never receding, or turning back, always progressing, and certainly reaching nirvana.
certainly