" nescient "

1: not informed about or aware of something;

  * e.g., " ... narrow-minded, provincial people who are blissfully nescient of the world beyond their little suburb "

•  Synonyms : 

•  clueless,

•  ignorant,

•  incognizant,

•  innocent,

•  insensible,

•  oblivious,

•  unacquainted,

•  unaware,

•  unconscious,

•  uninformed,

•  unknowing,

•  unmindful,

•  unwitting

•  Antonyms : 

•  acquainted,

•  aware,

•  cognizant,

•  conscious,

•  conversant,

•  grounded,

•  informed,

•  knowing,

•  mindful,

•  witting

1: the state of being unaware or uninformed;

  * e.g., " ... the appalling nescience of today's high schoolers concerning international affairs "

•  Synonyms : 

•  benightedness,

•  cluelessness,

•  ignorance,

•  incognizance,

•  innocence,

•  obliviousness,

•  unawareness,

•  unfamiliarity

•  Antonyms : 

•  acquaintance,

•  awareness,

•  cognizance,

•  familiarity