落単

• Reading: らくたん
• Romaji: rakutan
• Kanji breakdown: 落 (drop/fail) + 単 (from 単位, credits) → dropping credits, failing a course
• Pronunciation: /ɾa.kɯ.taɴ/

Meaning

Failing a course and losing the credits; dropping a unit due to poor grades or attendance.

落単 is student slang combining 落とす (to drop/fail) and 単位 (credits). It's the nightmare scenario for university students — failing a course means the credits don't count, which can delay graduation or require retaking the class. Common causes include poor attendance, failing the final exam, or not submitting required assignments. The word is used casually among students but carries real academic consequences.

Examples

1. 出席足りなくて落単確定だわ、マジ萎える。 I didn't have enough attendance so I'm definitely failing this course — I'm so bummed.
2. 必修を落単したら来年もう一回取り直しだよ。 If you fail a required course, you have to retake it next year.
3. 落単しまくって4年で卒業できなかった人知ってる。 I know someone who failed so many courses they couldn't graduate in four years.

Usage Guide

Context: university, friends

Tone: dismayed, self-deprecating

Do Say

• 落単だけは避けたいから最低限出席はしてる。 (I attend the bare minimum just to avoid failing the course.)
• 落単したことある？俺3回あるんだけど。 (Have you ever failed a course? I've done it three times.)

Don't Say

• 教授に「落単させないでください」は図々しい (Asking a professor 'please don't fail me' is presumptuous — earn the credits instead)

Common Mistakes

• Confusing 落単 with 落第 — 落単 is failing a single course, while 落第 is failing/being held back entirely

Origin & History

Abbreviation of 単位を落とす (to drop/fail credits). A piece of student slang that emerged naturally on university campuses as a quicker way to express the dreaded experience of failing a course.

Cultural Context

Era: Modern university slang, ongoing

Generation: University students

Social background: Universal among university students

Regional notes: Used across all of Japan. A staple of university life conversation, especially around grade announcement periods.