Skip to content

JLPT
Kanji
Tests
FAQ

鳥居Loading…

The entrance to your Japanese learning journey. Everything for JLPT prep — free, forever.

JLPT levels

JLPT N5
JLPT N4
JLPT N3
JLPT N2
JLPT N1

Study

Hiragana chart
Katakana chart
Kanji dictionary
214 radicals
Vocabulary lists
Grammar
Reading practice

Tests

JLPT guide
N5 practice test
Compare tests
NAT-TEST
JPT

Get started

Start with hiragana
Choose your level

© 2026 Nihon Torii. Built for learners, free for everyone.

鳥居 · とりい

Home
Levels
Start
Features
FAQ

Home
Vocabulary
JLPT N2
脱線

JLPT N2 · Vocabulary

脱線 — “derailment; digression, going off topic”

脱線 (read だっせん) means derailment; digression, going off topic. It appears on the JLPT N2 vocabulary list and is a noun.

Reading

だっせん

Meaning

derailment; digression, going off topic

脱線 in a sentence

電車でんしゃが脱線だっせんする。

The train derails.

The kanji in 脱線

脱to take off; to come out
線line

Words that share a kanji with 脱線

脱ぐぬぐ— to take off (clothes)
新幹線しんかんせん— bullet train, Shinkansen
線せん— line (train/rail)
地平線ちへいせん— the horizon
下線かせん— underline, underscore
曲線きょくせん— curve, curved line
光線こうせん— ray of light, beam
水平線すいへいせん— the horizon (over the sea)

Study N2 vocabulary free ← All N2 words All nouns