楽観|らっかんrakkan[0]heiban (flat)

JLPT N1approx.Common
Definitions
  1. noun, suru verb, transitive verboptimism; taking an optimistic view
    父ちちは私の楽観らっかんを乱みださないことにした。↗
    My father chose not to disturb my optimism.
Conjugation
Dictionary form楽観する(らっかんする)
Polite (masu)楽観します(らっかんします)
Negative (nai)楽観しない(らっかんしない)
polite (masen)楽観しません(らっかんしません)
classical zu / nu楽観せず・楽観せぬ(らっかんせず・らっかんせぬ)
Past (ta)楽観した(らっかんした)
polite (mashita)楽観しました(らっかんしました)
Past negative (nakatta)楽観しなかった(らっかんしなかった)
polite (masen deshita)楽観しませんでした(らっかんしませんでした)
Te form楽観して(らっかんして)
Potential楽観できる(らっかんできる)
Passive楽観される(らっかんされる)
Causative楽観させる(らっかんさせる)
Causative passive楽観させられる(らっかんさせられる)
Conditional (ba)楽観すれば(らっかんすれば)
tara楽観したら(らっかんしたら)
Volitional楽観しよう(らっかんしよう)
polite (mashou)楽観しましょう(らっかんしましょう)
Imperative楽観しろ(らっかんしろ)

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

Synonyms & antonyms
  • Synonym楽天らくてんNeutralAn attitude or temperament of not fretting over one's circumstances and staying cheerful (「楽天家」); 「楽観」 stresses an optimistic judgment of a situation.
  • Synonym楽観主義らっかんしゅぎWrittenA term of written, formal prose for optimism as an intellectual stance; 「楽観」 usually concerns views of concrete situations.
  • SynonymオプティミズムWrittenA loanword for optimism, seen mostly in commentary and critical writing; in everyday speech say 「楽観」 or 「楽観的」.
  • Synonym楽天主義らくてんしゅぎWrittenA written term for the view or tendency of believing life is ultimately good and not being bogged down in worry; close to 「楽観主義」.
  • Related楽観論らっかんろんWrittenA written term for an optimistic line of argument (「楽観論が広がる」), often used in judging how a situation will go; 「楽観」 can also act as the verb 「楽観する」.
  • Related楽天論らくてんろんWrittenA written term for a cheerfully optimistic claim; rare — in daily use, say 「楽観」 or 「楽天的」.
  • Antonym悲観ひかんNeutralPessimism and disappointment; the opposite of 「楽観」 in judging how things will turn out.

To think things will turn out well and not worry, say 「楽観」 (「楽観できない」, 「楽観的」); 「楽天」 is a carefree temperament. Optimism as a stance: 「楽観主義」, 「オプティミズム」, 「楽天主義」 (written). An optimistic argument is 「楽観論」; 「楽天論」 is rare. Opposite: 「悲観」.

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

Japanese definitions
  1. 物事ものごとの成行なりゆきを良よいように考かんがえて心配しんぱいなどしないこと。
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