How to say "important" in Japanese

Choosing the right word
  • 大事だいじJLPT N4approx.Common
    na-adjectiveEveryday 'important' with a nuance of personal value — something precious that you would handle with care. Also fits critical moments when much is at stake.
  • 重要じゅうようJLPT N3approx.Common
    na-adjectiveThe default for weighty, consequential importance: problems, decisions, information, or issues whose outcome matters. It states importance plainly and objectively, so it suits news, business, and writing.
    その結び目むすびめを守まもるのは重要じゅうようなことだ。↗
    Maintaining that tie is important.
  • 大切たいせつJLPT N5approx.Common
    na-adjectiveClose to 大事 and often interchangeable, but leaning toward 'precious, cherished': people, memories, and things you hold dear. Use it when warmth matters as much as importance.
    柔道じゅうどうでは力ちからより技わざのほうが大切たいせつである。↗
    In judo, technique is more important than strength.
  • na-adjective, nounBorrowed from English 'major', it describes something big-name, mainstream, or widely known — the opposite of マイナー (minor) — rather than simply important. For plain 'important' you normally want 重要 or 大事.
  • 大したたいしたJLPT N3approx.Common
    pre-noun adjectivalReally means 'considerable' or 'impressive': it evaluates something as remarkable rather than simply calling it important. For plain 'important' it is seldom the right choice; use 大事 or 重要.
    それはたいした問題もんだいではない。↗
    That is not much of a problem.

For plain 'important', use 重要 for weighty, consequential matters and 大事 or 大切 for what is personally precious; 「メジャー」 means major or well-known, and 「大した」 means considerable or impressive rather than important.

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

Japanese equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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