Long Vowels (Chōon)

By the end of this lesson, you will be able to recognize, pronounce, and write long vowels (chōon) in Japanese. You will understand how lengthening a vowel can completely change a word's meaning, and you will avoid common beginner mistakes.

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In Japanese, every vowel sound has a "short" version and a "long" version. A long vowel is simply held for twice as long as a short vowel. This is not a matter of emphasis or speed—it's a meaning-changing difference.

Think of it like the difference between "ship" and "sheep" in English. The vowel sound is different and changes the word. In Japanese, the difference is purely length, but it is just as important.

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1. The Five Vowels and Their Long Versions

Every Japanese vowel (a, i, u, e, o) can be lengthened. The way we write the long vowel depends on the sound.

Important exception: Some え-sound long vowels use え instead of い (e.g., おねえさん onee-san – older sister). Some お-sound long vowels use お instead of う (e.g., おおきい ookii – big). These are less common but you will see them.

2. Katakana Long Vowels

In katakana, long vowels are always written with a long vowel mark (ー).

• ケーキ (keeki) – cake
• コーヒー (koohii) – coffee
• スーパー (suupaa) – supermarket

3. The "Double Vowel" Feeling

When you say a long vowel, imagine you are saying the short vowel twice, but without a break. For example:

• おかあさん (okaa-san) = o-ka-a-san (not o-ka-san)
• せんせい (sensei) = se-n-se-i (not se-n-se)

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The #1 mistake: Not holding the vowel long enough.

• Saying おじさん (ojisan – uncle) when you mean おじいさん (ojiisan – grandfather) is a real error.
• Saying ゆき (yuki – snow) when you mean ゆうき (yuuki – courage) changes the word completely.

Tip: When you see two vowel characters in a row (like ああ, いい, うう, えい, おう), stretch the sound to about twice the length of a single vowel.

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Drill 1: Say each pair out loud, holding the long vowel for twice as long.

1. ここ (koko – here) → こうこう (koukou – high school)
2. とる (toru – to take) → とおる (tooru – to pass through)
3. え (e – picture) → ええ (ee – yes)

Drill 2: Fill in the blank with the correct long vowel spelling.

1. お__さん (mother) → おかあさん
2. せん__ (teacher) → せんせい
3. お__い (big) → おおきい

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Summary:

• Long vowels are held for twice as long as short vowels.
• In hiragana, long vowels are written by adding あ, い, or う after the base vowel (with a few exceptions).
• In katakana, use the long vowel mark ー.
• Getting the length wrong changes the meaning of words.

Next Step:
Practice listening to native speakers say minimal pairs (like ゆき vs ゆうき). Then move on to the next lesson: Double Consonants (Sokuon) , where you will learn another length-based sound rule.