Japanese · Pronunciation Guide

How do you pronounce "一" in Japanese?

Q: How do you pronounce 一 in Japanese?

一 is pronounced with the stress described below. In IPA it is written /i.tɕi/. It means “one.” ee-chi, two short beats, and that final i often goes voiceless so the word ends on a whispered "ch."

ee-chi, two short beats, and that final i often goes voiceless so the word ends on a whispered "ch."

一 /i.tɕi/

ichi

Two morae, equal in length, with a high-then-low pitch shape. Counting words are where mora timing shows up most audibly, because they get chained together at speed; keeping ichi to a strict two counts is what lets ichi-ni-san come out evenly rather than as a lopsided English "itchy-nee-SAHN."

Listen: 一

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Sound it out

i A short, tense high front vowel. This one carries the accent, so it starts high — but high in pitch, not longer or louder.

chi A single affricate produced with the tongue blade against the palate — lighter and more forward than the ch of "cheese." Utterance-finally the i after it commonly devoices, leaving a soft trailing hiss instead of a full vowel.

Hear it in a sentence

一時間だけ待ちました。

Ichi-jikan dake machimashita.

I waited only one hour.

Listen: 一時間だけ待ちました。

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一時間だけ待ちました compounds the number into 一時間 (i-chi-ji-kan), where the chi now sits between voiced sounds and therefore keeps its vowel fully voiced — a direct contrast with the devoiced version you get when 一 stands alone. 待ちました later in the sentence gives you a second chi in the same voiced-context position.

Where English speakers slip

Most learners borrow the English adjective "itchy" wholesale: a lax first vowel, a long stressed feel, and a drawn-out "ee" at the end. Japanese wants a tense short i, a light forward ch, and a final vowel so brief it may vanish. The other thing to avoid is aspirating the ch heavily — Japanese affricates are gentler than English ones.