温泉

• Reading: おんせん
• Romaji: onsen
• Kanji breakdown: 温 (warm) + 泉 (spring) → hot spring
• Pronunciation: /o.n.se.n/

Meaning

Hot spring bath — both the natural geothermal springs and the bathing facilities built around them.

While technically a standard word, 温泉 functions as a cultural keyword in travel conversation. Saying 温泉行きたい is one of the most common travel-related phrases in Japanese. It encompasses everything from luxury resort ryokan to rustic outdoor baths (露天風呂). Going to an 温泉 is a quintessential Japanese leisure activity, associated with relaxation, seasonal trips, and bonding with friends or partners.

Examples

1. 温泉入りたすぎて箱根の宿予約しちゃった。 I wanted to soak in an onsen so bad that I booked a place in Hakone.
2. 仕事疲れたから週末は温泉でゆっくりしたいな。 I'm tired from work, so I just wanna relax at an onsen this weekend.
3. 雪見温泉って最高じゃない？一回やってみたい。 Isn't a snow-viewing onsen the best thing ever? I wanna try it at least once.

Usage Guide

Context: travel, daily conversation, weekend plans

Tone: relaxed, longing

Do Say

• 温泉行こうよ、日帰りでもいいからさ。 (Let's go to an onsen — even a day trip is fine.)
• 露天風呂付きの温泉旅館に泊まりたい。 (I want to stay at an onsen inn with an outdoor bath.)

Don't Say

• スーパー銭湯を「温泉」と呼ぶのは厳密には違う — 天然温泉じゃないと温泉とは言えない (Calling a super sentō an 'onsen' isn't technically correct — true onsen must use natural hot spring water)

Common Mistakes

• Confusing 温泉 (natural hot spring) with 銭湯 (public bathhouse) — they are different, though some 銭湯 use natural spring water
• Not knowing onsen etiquette — wash thoroughly before entering, no swimsuits, tattoo restrictions at many facilities

Origin & History

Compound of 温 (warm) and 泉 (spring). Japan's volcanic geography provides thousands of natural hot springs, making 温泉 culture central to Japanese life for centuries. Over 3,000 温泉 resorts operate across the country.

Cultural Context

Era: Ancient tradition, ongoing national pastime

Generation: All ages

Social background: Universal

Regional notes: Used across Japan. Famous onsen regions include Hakone, Beppu, Kusatsu, Arima, and Noboribetsu. Each region has different mineral compositions.