eternity; perpetuity; immortality
Abstract noun for an unending state; often used in formal or literary contexts.
He wished for eternal peace.
lifetime title holder
Used in shogi, go, and similar games for a player who has earned a permanent title.
Yoshiharu Habu holds the qualification of Lifetime Meijin.
permanent neutrality
permanently neutral country
Compound of 永 (long, eternal) and 世 (world, generation, age). The exact historical derivation is uncertain, but the spelling is conventionally associated with the meaning of an unending age or permanent status.