永えい久きゅう

え

い

きゅ

う

Common wordJLPTN3Freq.FrequencyTop 5,000

Meanings

noun, na-adjective, noun which may take the genitive case particle 'no'

Used for something lasting forever or indefinitely. Can be used as a noun, na-adjective, or no-adjective.

Related words· 8

永えい遠えんN3sense 1
永遠 is the more common, poetic word for abstract eternity, while 永久 stresses literal permanence or unending duration, often of physical or institutional things.
恒こう久きゅうN1sense 1
恒久 is a formal, often political term (as in 恒久平和 'lasting peace'), whereas 永久 is the general-purpose word for permanence in everyday and technical contexts.
半はん永えい久きゅう的てきN2
永久 means truly eternal or permanent, while 半永久的 describes something meant to last a very long time but not literally forever.
無む期き限げんN1
永久 means 'permanent' or 'eternal', implying something lasts forever, whereas 無期限 just means no end date has been set, without necessarily implying it will never end.

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不ふ変へんN1
不変 focuses on the unchanging quality of something, while 永久 emphasizes that it will last forever in time.
永えい代たい
永久 means 'permanent, forever' and is used broadly (永久歯, 永久保存), whereas 永代 is narrower and tied to formal or ceremonial contexts such as temple services or land tenure.
悠ゆう久きゅう
永久 means 'permanence' or 'everlasting' and is used in technical or concrete contexts (e.g., 永久保存), whereas 悠久 carries a poetic, grand-scale nuance.
長ちょう久きゅう
永久 is a widely used, neutral word for 'forever/permanent', whereas 長久 is confined to formal or set literary expressions.