1二次元好きの匿名さん25/08/27(水) 14:11:47報告📢永遠と /ei.eɴ.toˈ/語源Japanese Japanese永遠に 延々と └─┬──┘ 永遠とJapanese "永遠"(from a base meaning ‘eternal’) + adverval suffix と. The change in the spelling of the last syllable in the 21th century was due to association with the unrelated word 延々と.