naïfly

Adverb

naively (comparative more naively, superlative most naively)

1. In a naive manner.
   • The order was written. In less than ten days everything was "on wheels" and the whole body of these Sioux [was] on the move to the country they had indicated, and the Secretary of the Interior says, naively, in his report for 1868, "The Indians were found to be quite determined to move westward...1881, Helen Hunt Jackson, chapter V, in A Century of Dishonor