むだんけっせき

むだんけっせき【無断欠席】

unexcused absence (from school, meeting, etc.).

～する 〔学校を〕 be absent from school without permission; 〔会議などを〕 skip a meeting without permission.

●この講義では無断欠席が3 回続くと受講資格を失う. Three unexcused absences from this class [course] in a row will result in disqualification [exclusion] from the course.