" unwitting "

1: happening by chance;

  * e.g., " ... an unwitting mistake made in copying the material "

•  Synonyms : 

•  accidental,

•  casual,

•  chance,

•  fluky,

•  fortuitous,

•  inadvertent,

•  incidental,

•  unintended,

•  unintentional,

•  unplanned,

•  unpremeditated

•  Antonyms : 

•  calculated,

•  deliberate,

•  intended,

•  intentional,

•  planned,

•  premeditated,

•  premeditative,

•  prepense,

•  set

2: not informed about or aware of something;

  * e.g., " ... an unwitting accomplice to the crime "

•  Synonyms : 

•  clueless,

•  ignorant,

•  incognizant,

•  innocent,

•  insensible,

•  nescient,

•  oblivious,

•  unacquainted,

•  unaware,

•  unconscious,

•  uninformed,

•  unknowing,

•  unmindful

•  Antonyms : 

•  acquainted,

•  aware,

•  cognizant,

•  conscious,

•  conversant,

•  grounded,

•  informed,

•  knowing,

•  mindful,

•  witting