本性  inherent nature (prakṛti).

sabhāva : [m.] nature; condition; disposition; reality.

A.P. Buddhadatta Mahathera, Concise Pali-English and English-Pali Dictionary [available as digital version from Metta Net, Sri Lanka]

Sabhāva [sa4+bhāva] 1. state (of mind), nature, con- dition Miln 90, 212, 360; PvA 39 (ummattaka˚), 98 (santa˚), 219. -- 2. character, disposition, behaviour PvA 13, 35 (ullumpana˚), 220 (lokiya˚). -- 3. truth, reality, sincerity Miln 164; J v.459; v.198 (opp. musāvāda); J vi.469; sabhāvaŋ sincerely, devotedly J vi.486.
   -- dhamma principle of nature J i.214; -- dhammatta= ˚dhamma Vism 238. -- bhūta true J iii.20.

Pali-English Dictionary, TW Rhys Davids, William Stede,