Unclear. Perhaps from Ashokan Prakrit *𑀦𑀝𑁆𑀝 (*naṭṭa, “less; short”) and influenced through analogy by जांटो (jāṇṭo, “old, aged”).
नेण्टो • (neṇṭo) (Latin script nenntto, Kannada script ನೆಂಟೊ)