Adjective
not having undergone the Christian ritual of baptism
Source: WordNetFrederick II allows the order to invade Prussia, by P. Janssen The conquest of Prussia was accomplished with much bloodshed over more than fifty years, during which native Prussians who remained unbaptised were subjugated, killed, or exiled. Source: Internet
The child was sickly and - fearing she would die unbaptised - Alfonso ordered her to be baptised straightaway with Eleonora della Mirandola and count Alexandro Serafino as godparents. Source: Internet