Adjective
not marked with shallow depressions or furrows
Source: WordNetSuch young unfurrowed souls roll to meet each other like two velvet peaches that touch softly and are at rest they mingle as easily as two brooklets that ask for nothing but to entwine themselves and ripple with ever-interlacing curves in the leafiest hiding-places. George Eliot
an unfurrowed field Source: Internet
unfurrowed cheeks Source: Internet