ラッシュ

• Reading: ラッシュ
• Romaji: rasshu
• Kanji breakdown: From English 'rush (hour)' → katakana loanword for peak commuting period
• Pronunciation: /ra.sɕu/

Meaning

Rush hour — the peak commuting period when trains and roads are at their most congested.

Borrowed from English 'rush (hour),' ラッシュ in Japanese specifically evokes the extreme congestion of morning and evening commutes. 朝ラッシュ (morning rush) and 夕ラッシュ/帰宅ラッシュ (evening/homeward rush) are daily realities for millions. Beyond trains, ラッシュ also applies to highway congestion, especially during holiday periods (お盆ラッシュ, 年末年始ラッシュ). Avoiding ラッシュ is a key consideration in daily planning.

Examples

1. 朝ラッシュ避けたいから早めに出るね。 I want to avoid the morning rush, so I'm heading out early.
2. お盆のラッシュに巻き込まれて高速3時間渋滞だった。 We got caught in the Obon rush and sat in a 3-hour highway traffic jam.
3. ラッシュの時間帯は電車乗りたくない。 I don't want to ride the train during rush hour.

Usage Guide

Context: commuting, travel planning, daily conversation

Tone: practical, complaining

Do Say

• ラッシュの時間ずらして出よう。 (Let's leave at a time that avoids rush hour.)
• 朝ラッシュ終わってから行けば空いてるよ。 (If you go after morning rush is over, it'll be empty.)

Don't Say

• 深夜のガラガラな電車を「ラッシュ」とは言わない — ラッシュは混雑した時間帯のこと (Don't call an empty late-night train 'rush' — ラッシュ means a congested peak period)

Common Mistakes

• Thinking ラッシュ only refers to trains — it is also used for highway congestion during holidays (お盆ラッシュ, GWラッシュ)
• Not knowing peak times — morning rush is roughly 7:30-9:30 AM, evening rush is 5:30-8:00 PM

Origin & History

From English 'rush (hour).' Adopted into Japanese during the post-war period of rapid urbanisation. Often used without 'hour' — just ラッシュ alone conveys the full meaning of peak congestion.

Cultural Context

Era: Post-war urbanisation, ongoing

Generation: All commuting ages

Social background: Universal urban life

Regional notes: Most intense in Tokyo and Osaka. Holiday ラッシュ on highways and trains is a seasonal news staple, with predictable peak congestion around GW, Obon, and New Year.