yllättävä, improvisoitu, valmistelematon
valmistautumaton
Not prepared; caught by surprise.
''The castle was unprepared for the assault.''
A mark given to a pupil who arrives at a lesson without the necessary items or preparation.
{{quote-text|en|year=1983|author=Ronald B. Lansing|title=Skylarks and lecterns: a law school charter|page=116