naive
‘innocent, unspoiled; natural’
Lexical development traced from the Tamil root:
E. naïve < F. naïve < O.F. naif ‘natural, genuine; just born; foolish, innocent; unspoiled, unworked’ < Lat. nativus ‘not artificial’ < natus < nasci ‘to be born,’ related to gignere 'beget' < O.Lat. gnasci < na < gene- < Tamil īṉ