永えい世せいえいせいFreq.FrequencyTop 50,000Meanings1nouneternity; perpetuity; immortalityAbstract noun for an unending state; often used in formal or literary contexts.彼かれは永えい世せいの平へい和わを願ねがった。He wished for eternal peace.2nounlifetime title holderUsed in shogi, go, and similar games for a player who has earned a permanent title.