unprepared (comparative more unprepared, superlative most unprepared)
- Not prepared; caught by surprise.
- The castle was unprepared for the assault.
unprepared (plural unprepareds)
- A black mark given to a pupil who arrives at a lesson without the necessary items or preparation.
- 1983, Ronald B. Lansing, Skylarks and lecterns: a law school charter (page 116)
- "He's got another rule: Whenever he gets three unprepareds in a row, he leaves the classroom."