知らせる・報せる|しらせるshiraseru[0]heiban (flat)

JLPT N4approx.Common
Which spelling to use
知らせる知らせる is the most common and standard written form; use it as the usual spelling when writing this word.
報せる報せる is rarely used, so you will seldom see this kanji-kana spelling; recognize it when encountered, but choose 知らせる for your own writing.
Definitions
  1. ichidan verb, transitive verbto notify; to advise; to inform
    彼女かのじょはそれをどのようにして知しらせたのですか。↗
    How did she tell them?
Conjugation
Dictionary form知らせる(しらせる)
Polite (masu)知らせます(しらせます)
Negative (nai)知らせない(しらせない)
polite (masen)知らせません(しらせません)
classical zu / nu知らせず・知らせぬ(しらせず・しらせぬ)
Past (ta)知らせた(しらせた)
polite (mashita)知らせました(しらせました)
Past negative (nakatta)知らせなかった(しらせなかった)
polite (masen deshita)知らせませんでした(しらせませんでした)
Te form知らせて(しらせて)
Potential知らせられる(しらせられる)
Passive知らせられる(しらせられる)
Causative知らせさせる(しらせさせる)
Causative passive知らせさせられる(しらせさせられる)
Conditional (ba)知らせれば(しらせれば)
tara知らせたら(しらせたら)
Volitional知らせよう(しらせよう)
polite (mashou)知らせましょう(しらせましょう)
Imperative知らせろ(しらせろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym告げるつげるWrittenWritten/formal prose. Announces or imparts something with more solemnity than 「知らせる」, as in 「別れを告げる」.
  • Synonym伝えるつたえるNeutralNeutral. Centers on carrying a message or feeling to someone, as in 「気持ちを伝える」.
  • Synonym報じるほうじるWrittenWritten/formal prose. Refers to media reporting, as in 「新聞が報じる」.
  • Synonym報ずるほうずるWrittenWritten/formal prose. An alternative form of 「報じる」 meaning to report or repay; heavier written flavor, common in press copy.
  • Synonym伝達でんたつWrittenWritten/formal prose. Passing orders or information along to others, as in 「伝達事項」.
  • Related教えるおしえるNeutralNeutral. Covers telling someone something or teaching, as in 「道を教える」.
  • Related告知こくちWrittenWritten/formal prose. Formal notification of something, as in 「病名を告知する」.
  • Related連絡れんらくNeutralNeutral. Getting in touch with or updating someone, as in 「連絡を取る」「欠席すると連絡する」; fits one-way or two-way exchange.
  • Related通知つうちWrittenWritten/formal prose. A formal notice — in writing, by word of mouth, or as a phone push alert — as in 「合格通知」.
  • Related通告つうこくFormalFormal. A unilateral official notice, as in 「解雇を通告する」.
  • RelatedアナウンスNeutralNeutral loanword. A formal announcement to a general audience, usually a broadcast, as in 「車内アナウンス」.
  • Antonym隠すかくすNeutralNeutral. The opposite of 「知らせる」: to conceal something from others, as in 「事実を隠す」.
  • Antonym秘めるひめるWrittenWritten/formal prose. The opposite of 「知らせる」: to keep a feeling hidden within, as in 「思いを秘める」.

Use 「知らせる」 as the default for notifying or informing someone. Turn to 「伝える」 to stress conveying a message, 「連絡」 for getting in touch, 「通知」 for formal notices, 「通告」 for unilateral official notice, 「報じる」 for media reports, 「アナウンス」 for public broadcasts, and 「隠す」 when concealing.

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

Japanese definitions
  1. 他人たにんに情報じょうほうを伝つたえる、教おしえる。
  2. 相手あいてに(身みを以もって)理解りかいさせる。思い知おもいしらせる。
Kanji in this word
English 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