How to Pronounce '一つ': Japanese Pronunciation Guide

Q: How do you pronounce 一つ in Japanese?

一つ is pronounced with the stress described below. In IPA it is written /çi.to.tsɯ̥/. It means “one (thing).” hi-to-tsu, three beats, with a palatal h at the start and a genuine single-sound tsu at the end.

How do you pronounce "一つ" in Japanese?

hi-to-tsu, three beats, with a palatal h at the start and a genuine single-sound tsu at the end.

一つ /çi.to.tsɯ̥/

hitotsu

Metronome check — three clicks, one per mora — with the melody starting high on hi and stepping down from there. Because both the first and third morae are prone to devoicing, this word can sound in fast speech like little more than a whispered frame around the central "to" — but the timing of all three beats stays intact even when two of them are voiceless.

Listen: 一つ

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Sound it out

hi The h before i isn't the h of "hat" — the friction moves up to the hard palate, producing something close to the breathy start of English "hue." The i is short, and in fast speech this whole mora often devoices.

to A dental t with no aspiration into a pure short o. This is the beat that most often gets stressed by mistake.

tsu One indivisible affricate, not t followed by s. English only allows this cluster at the ends of words ("cats"), so producing it word-initially or as a full mora takes practice: set the tongue for t and release straight into s in a single motion. The u is unrounded and frequently devoiced at the end.

Hear it in a sentence

りんごを一つ買いました。

Ringo o hitotsu kaimashita.

I bought one apple.

Listen: りんごを一つ買いました。

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りんごを一つ買いました gives you りんご (three morae, with the ん as a full beat) and 買いました, where 買い is ka-i — two beats, not the English diphthong "kigh." So the sentence asks you to keep a nasal mora, resist a diphthong, and produce a proper tsu, all in one breath.

Where English speakers slip

The tsu is the notorious part: English speakers say "hi-TOE-soo," splitting the affricate into "t" plus "soo" or dropping the t entirely. It's one sound. The other error is the h — using the hard English h instead of the palatal version. And of course the middle beat gets English stress, which flattens the pitch pattern and stretches the o.