Japanese has just 5 vowels — but English speakers almost always mispronounce them. Unlike English vowels, Japanese vowels are pure and consistent: they never change sound. Once you nail the 5 vowels, your entire Japanese pronunciation improves.
| Vowel | Hiragana | Sound (like English) | Mouth position | Common mistake |
|---|---|---|---|---|
| a | あ | ‘ah’ in ‘father’ | Mouth open, jaw low | Saying ‘ay’ like in ‘cat’ |
| i | い | ‘ee’ in ‘feet’ | Mouth wide, lips spread | Too short — hold the ‘ee’ pure |
| u | う | Between ‘oo’ and ‘uh’ | Lips NOT rounded (unlike English ‘oo’) | Rounding lips like ‘oo’ in ‘boot’ |
| e | え | ‘eh’ in ‘bed’ | Mouth half open | Saying ‘ay’ as in French ‘é’ |
| o | お | ‘oh’ in ‘so’ (but shorter) | Lips slightly rounded | Adding a glide sound: ‘ow’ |
The Most Mispronounceable: う (u)
Yuka「う」は英語の「oo」と違う！唇を丸めないで。
(「う」is NOT like ‘oo’ in ‘boot’ — don’t round your lips!)
Rei「す」「つ」「ず」— 全部この「う」が入ってるから要注意。
(す, つ, ず all contain this vowel — pay attention!)
The Japanese う is an unrounded back vowel. Keep your lips flat and relaxed — think of saying ‘uh’ but pulling your tongue slightly back.
Shadowing exercise: Repeat これ・あれ・それ・どれ (ko-re / a-re / so-re / do-re) 5 times fast. Each vowel should be clean and consistent.
Pure Vowels vs English Diphthongs
In English, vowels glide: ‘go’ is actually [goʊ] — a diphthong. In Japanese, vowels are pure: お stays [o], it never becomes [oʊ].
| Word | Wrong (English habit) | Correct Japanese |
|---|---|---|
| そ (so) | ‘so’ [soʊ] | そ [so] — stop before the glide |
| の (no) | ‘no’ [noʊ] | の [no] — flat, no glide |
| に (ni) | ‘knee’ [niː] (long) | に [ni] — shorter, pure |
| あ (a) | ‘a’ [eɪ] (like in ‘ape’) | あ [a] — ‘ah’, mouth open wide |
Long Vowels (長音)
Yuka「おばさん」と「おばあさん」— 長さが違うと意味が変わる！
(おばさん vs おばあさん — length changes the meaning!)
Rei「コーヒー」の「ー」も長音だよ。2拍分伸ばす。
(The ー in コーヒー is also a long vowel — hold for 2 beats.)
| Short | Long | Meaning Pair |
|---|---|---|
| おじさん (uncle) | おじいさん (grandfather) | Length = meaning |
| おばさん (aunt) | おばあさん (grandmother) | Length = meaning |
| ゆき (Yuki, snow) | ゆうき (courage) | Length = meaning |
| こうこう (high school) | こうこう (two readings!) | Context determines which |
Practice: Say these pairs out loud. The long vowel should be exactly twice as long as the short one. Use a metronome if needed — 1 beat per mora.
Minimal Pair Practice: Vowel Discrimination
| Pair | Word 1 | Word 2 | Trick to hear the difference |
|---|---|---|---|
| a vs e | さ (sa) | せ (se) | ‘ah’ vs ‘eh’ — jaw drops more for あ |
| i vs e | し (shi) | せ (se) | ‘ee’ vs ‘eh’ — mouth wider for い |
| u vs o | す (su) | そ (so) | ‘uh’ vs ‘oh’ — slight lip rounding for お |
| Long vs short | ゆき (snow) | ゆうき (courage) | Count the beats: 2 vs 3 |
Shadowing Practice Sentences
Repeat each sentence 3 times at natural speed, focusing on vowel purity:
1. あおい空 — あ(a) お(o) い(i): three distinct vowels
2. うえの駅 — う(u) え(e) の(no): practice the tricky う and え
3. おいしいです — listen for 4 separate vowel sounds: o-i-shi-i-de-su
Quick Quiz: Hear the Difference
1. Which word has a long vowel: おじさん or おじいさん?
→ おじいさん
2. The Japanese う — should your lips be rounded?
→ No. Lips flat and relaxed.
3. How many vowel sounds in おいしい?
→ 4: o-i-shi(i)-i
Which vowel is hardest for you? Drop it in the comments — Yuka reads every one! 💬
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