der blaue Brief

an official warning letter - esp. a school notice of failing grades, or a dismissal notice

Origin

The expression dates back to the 19th century: official letters - such as Prussian cabinet orders or discharge papers - were sent in stiff blue envelope paper (said to be made from scraps of blue uniform cloth). Today it mainly denotes the warning letter sent when a pupil is at risk of not being moved up a grade.

Source

Building blocks

Words in this expression

Grammar that uses this word

Examples

  • Wenn sich seine Noten nicht bessern, bekommt er einen blauen .

    If his grades don't improve, he'll soon get a warning letter from school.