niedostateczny

Etymology
From.

Adjective

 * 1) insufficient
 * 2) inadequate
 * 1) inadequate

Noun

 * 1)  F

Usage notes
In Poland, the lowest, failing grade at universities and other institutions of higher learning ("niedostateczny") is denoted with a 2. In primary and secondary education, it's denoted with a 1 while 2 stands for dopuszczający which is not used in universities.