Permanent
Perpetual
noun, の adjective
こうきゅう
高級 (こうきゅう) High-Class, High Grade, High Level
恒久 (こうきゅう) Permanent, Perpetual
恒常 (こうじょう) Constancy, Constant, Unchanging
悠久 (ゆうきゅう) Eternity, Perpetuity, Permanence
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