一年・1年|いちねんichinen

Common
ひととしhitotoshiひととせhitotose
Which spelling to use
一年一年 is the most common written form and the default choice for beginners. It uses kanji only.
1年1年 is a less common written variant using numerals and Latin characters. Beginners should choose 一年 instead.
Definitions
  1. nounone year; some time ago
    私は1年ねん契約けいやくで働はたらいた。↗
    I worked on a yearly contract.
Synonyms & antonyms
  • Synonym年間ねんかんNeutralDenotes the span of a year and mostly appears in compounds such as 「年間計画」; 「年間を通して」 is also possible. More statistical in tone than 「一年」.
  • Related年度ねんどNeutralAn institutional year — fiscal or school, as in 「2025年度」 — with start and end set by the system; 「一年」 is a one-year span or the calendar year from January to December.
  • Related年中ねんじゅうNeutralAll year round, as in 「年中無休」, stressing unbroken continuity through the year.

Use 「一年」 for a one-year duration, as in 「一年間」; pick 「年度」 for a fiscal or school year and 「年中無休」 for no days off all year.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese definitions
  1. ある時期じきから数かぞえて、365日かまたは366日か、12か月げつに相当そうとうする期間きかん。
  2. ある年としの1月がつ1日ついたちから12月がつ31日にちまでの期間きかん。
  3. 学校がっこうの一いち年生ねんせい。
Kanji in this word
See also

Say it right, write it right

Core lookup works fully offline, with cloud pronunciation and one-tap save & review. Free, no sign-up.

Free downloadWindowsFree downloadmacOSDownload on the App StoreGet it on Google Play
MobileiOS / Android

Android

QR code for the Google Play pageGet it on Google Play

Scan it with your Android phone to install, or search for “Tomoshi” on Google Play.

iOS

QR code for the App Store pageDownload on the App Store

Scan it with your iPhone camera to install, or search for “Tomoshi” in the App Store.

Install the browser extensionLook words up on any web page · Chrome / Edge / Safari

Screenshot of a Tomoshi lookup resultScreenshot of Tomoshi lookup results on a phone

Windows macOS Chrome / Edge / Safari extension iOS / Android