幾いく久ひさしくいくひさしくMeanings1adverbforever; eternally; for a long time to comeFormal, somewhat old-fashioned adverb used mainly in written correspondence or ceremonial greetings to express a wish for enduring happiness, prosperity, or relationship. Not used in everyday conversation.末すえ永ながく幾いく久ひさしくお幸しあわ
