Without discrimination; without differentiation (Skt. avikalpa, vinikalpa, nirvikalpa: Tib. mi rtog pa). A function of the mind free from making distinctions between objects, or between subject and objects, normally considered to be the superior mode of function of the enlightened mind in Mahāyāna Buddhism.

nirvikalpa. Non-discriminating.

A Dictionary of Chinese Buddhist Terms, William Edward Soothill and Lewis Hodous

nirvikalpa, avikalpa, akalpa, asaṃbhinna; akalpana, akalpanā, akalpika, akalpita, akupyanatā, a-dvaidhī-kāratva, abheda, avikalpaka, avikalpakatva, avikalpatā, avikalpana, avikalpanatā, avikalpanā, avikalpaya (den.), avikalpita*, avikāra, asaṃbheda, asaṃbhedana, kalpanāpoḍha, nirvikalpakatā, nirvikalpatā, nirvikalpatva, nirvikalpācāra, nirvikalpita, nirviśiṣṭa, nirvyāpāra, niṣkalpanā, vikalpa-varjita, vitatha-parikalpa.

佛教漢梵大辭典

P2153

顯揚十七卷五頁云：復次如是所說無分別者，於何等法，說無分別耶？頌曰：於法及法空，無二種戲論。無分別無窮；此上非應理。論曰：法與法空，俱無二分別二種戲論，故名無分別。云何為二？謂有及無。何以故？色、非是有。遍計所執相無故。亦非是無。彼假所依事有故。色空、亦非有。遍計所執相無所顯故。亦非是無。諸法無我有所顯故。如於色，色空；如是於餘一切法，及一切法空，當知亦爾。非離諸法及法空外，更有餘境是可得者。是故但說二無分別。非無分別更無分別。有無窮過。此上更無所知境故。

朱芾煌《法相辭典》字庫