Word for unintentional omitting of context when telling something

Solution 1:

pretermission :

  1. neglecting to do something; leaving out or passing over something
  2. letting pass without notice

inadvertence :

the quality or condition of being inadvertent; heedlessness.

oversight :

an unintentional failure to notice or do something. "he said his failure to pay for the tickets was an oversight"

Absent-minded :

of a person or a person's behavior or manner) having or showing a habitually forgetful or inattentive disposition

Vague :

thinking or communicating in an unfocused or imprecise way. "he had been very vague about his activities"

preoccupied :

of a matter or subject) dominate or engross the mind of (someone) to the exclusion of other thoughts. "his mother was preoccupied with paying the bills