unbriefed

/ʌnˈbriːft/
adjective
  1. Not given necessary information or instructions beforehand.
    • She went into the meeting unbriefed and had to rely on her quick thinking.
    • Journalists who arrived unbriefed struggled to understand the complex press release.
    • The new intern felt completely unbriefed on the company's safety procedures.
Antonyms
What does "unbriefed" mean? | whatsthatwordmean | whatsthatwordmean