不滅|ふめつfumetsu[0]heiban (flat)

1. na-adjective, no-adjectiveimmortal; undying; indestructible
   魂たましいは不滅ふめつだとプラトンは考かんがえた。↗

   Plato held that the soul is immortal.

• Synonym永遠えいえんNeutralThe most general word for eternity, and the one with emotional warmth; 不滅 stresses specifically that something never dies or is destroyed.
• Synonym永久えいきゅうNeutralPermanence in a plain, objective sense, as in 「永久保存」; 不滅 stresses that something does not perish.
• Synonym不朽ふきゅうWrittenWritten word for works and deeds that live on for posterity, as in 「不朽の名作」; about lasting fame, not simply never perishing.
• Synonym不磨ふまWrittenWritten word for what never wears away; most often seen in the set phrase 「千古不磨」.
• Synonym千古不磨せんこふまWrittenRare written four-character term for immortal through the ages; said of constitutions, classics, achievements, reputations.
• Related悠久ゆうきゅうWrittenWritten word for vast, unending stretches of time, said of history and nature; 不滅 stresses not perishing.
• Related無限むげんNeutralMeans limitless or infinite, stressing the absence of bounds; 不滅 stresses that something does not perish.
• Related限りないかぎりないNeutralBoundless or endless, as in 「限りない愛」; carries emotional coloring.
• Related果てしないはてしないNeutralEndless, with no end in sight, as in 「果てしない道」; used of space and time.
• Related永続えいぞくWrittenWritten word for long continuation, as in 「永続性」; stresses ongoing duration, not freedom from destruction.
• Related不変ふへんNeutralUnchanging, as in 「不変の真理」; the focus is on something staying the same, not on it never dying or perishing.
• Related万代不易ばんだいふえきWrittenWritten four-character term for remaining unchanged through the ages; stresses constancy, while 不滅 stresses not perishing.
• Related永久不変えいきゅうふへんWrittenWritten four-character term for remaining forever unchanged; the stress is on constancy, not on never perishing.
• Related永久とわNeutralPermanence in a plain, objective sense, as in 「永久保存」; 不滅 stresses that something does not perish.
• Related永続的えいぞくてきWrittenMeans lasting or long-continued, as in 「永続的な平和」; describes duration, not freedom from destruction.
• Related常しなえとこしなえWrittenArchaic, poetic word for eternity, found in waka and literature; in everyday speech use 「永遠」.
• Related恒久的こうきゅうてきWrittenMeans permanent in character, as in 「恒久的な対策」 or 「恒久的な平和」.
• Related果てしがないはてしがないNeutralMuch the same as 果てしない, boundless and unending; often seen in 「果てしがない話」.
• Related無窮むきゅうWrittenWritten word for infinity, endless in time and space, as in 「天壌無窮」.
• Related千古不易せんこふえきWrittenWritten four-character term for what never changes through the ages, such as truths; stresses constancy, not immortality.
• Related不易ふえきWrittenWritten word for unchangingness, known from haiku theory in 「不易流行」.
• Related尽きないつきないNeutralInexhaustible — talk that never runs out, supplies that never run dry, as in 「話が尽きない」.
• Antonym消滅しょうめつWrittenAntonym: ceasing to exist or losing effect, as in 「権利の消滅」; the direct opposite of 不滅.
• Antonym滅亡めつぼうWrittenAntonym: the fall or ruin of a nation or people; the direct opposite of 不滅.

Say 「永遠」 for eternity in general, 「永久」 for plain permanence, and 「不滅」 when something never dies or is destroyed, as in 「不滅の記録」 or 「霊魂不滅」. For works and deeds that live on for posterity use 「不朽」. 「不変」 and the four-character terms 万代不易, 永久不変 and 千古不易 stress unchangingness, 「永続的」 and 「永続」 duration, 「悠久」 long spans of history or nature, 「無限」 and 「限りない」 boundlessness, 「尽きない」 inexhaustibility; 「常しなえ」 belongs to poetry. Antonyms: 「消滅」 ceasing to exist, 「滅亡」 the fall of a nation.

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

1. 死しなないこと。滅ほろばないこと。消きえないこと。また、そのようなさま。