তৃষ্ণাহীন (Bengali) comes from Bengali -হীন, from Sanskrit हीन, from Proto-Indo-Iranian ȷ́ʰHnás, from Proto-Indo-European ǵʰh₁-nós, from Proto-Indo-European ǵʰeh₁- — to go, to walk.
তৃষ্ণাহীন (Bengali): thirstless