失意|しついshitsui[1]atamadaka (head-high)

1. no-adjectivedisappointment; despair; despondency; broken heart; adversity
   ビルは失意しついのうちに死しんだ。↗

   Bill died a disappointed man.

• Synonym失望しつぼうNeutral「失望」 centers on a specific expectation falling through; 「失意」 describes the dejected state that follows when one's ambitions are thwarted.
• Synonym絶望ぜつぼうNeutral「絶望」 is the strongest of the three: hope is completely gone. It is more absolute than 「失意」, which covers dejection without implying all hope is lost.
• Antonym得意とくいNeutralAntonym: pride and elation when things go well, the opposite of 「失意」, as in 「得意の絶頂」.
• Antonym意気揚々いきようようNeutralAntonym: triumphant and in high, proud spirits — the direct opposite of the dejection of 「失意」.

Use 「失意」 for the dejection that follows unfulfilled ambitions, as in 「失意のどん底」 or 「失意の日々」. Choose 「失望」 when an expectation is dashed and 「絶望」 when all hope is gone. The antonyms are 「得意」 and 「意気揚々」.

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

1. 希望きぼうや志こころざしを遂とげることができず落胆らくたんすること。失望しつぼう。