अनारक्षित (Hindi) comes from Hindi आरक्षित, from Sanskrit आरक्षित, from Sanskrit रक्षित, from Sanskrit रक्ष्, from Proto-Indo-Aryan Hrakṣ-, from Proto-Indo-Iranian Hrakš-, from Proto-Indo-European h₂lek- — to protect.
अनारक्षित (Hindi): unreserved