Translation guide
The concept of 'eternity' in Japanese can be expressed through words for infinite time, permanence, or a very long time. The most common and versatile term is 永遠 (eien), but other words carry nuances of permanence, timelessness, or literary/poetic flavor.
Expressing the abstract idea of time without end, often in philosophical, romantic, or poetic contexts.
The most common and general word for 'eternity'. Used in everyday speech, literature, and formal contexts. Can also function as a na-adjective meaning 'eternal'.
I vow eternal love.
I wish this moment could last forever.
Similar to 永遠, but often emphasizes permanence or unchanging state. Common in technical or formal contexts, like 'permanent' or 'perpetual'.
This building should be preserved permanently.
A poetic or literary term for eternity, often used in songs, poems, or emotional expressions. Can be written as 永久 but read as とわ in these contexts.
To sleep eternally (a euphemism for death).
Expressing that something feels like it lasts forever, often in casual or exaggerated speech.
Referring to a state beyond time, often in spiritual or philosophical contexts.
Conveys a sense of vast, ancient eternity, often used for nature, history, or the universe. More literary than 永遠.
Through eternal time, the mountain remains unchanged.
A compound meaning 'eternal and unchanging'. Used in formal or philosophical writing.
永遠 (eien) is the general term for eternity, used in everyday and formal contexts. 永久 (eikyuu) often implies permanence or perpetuity, common in technical or legal language. とわ (towa) is poetic and emotional, rarely used in ordinary conversation.
eternal friendship
permanent teeth
eternal love (poetic)
When saying something 'took an eternity' in English, a direct translation like 「永遠にかかった」 may sound unnatural. Instead, use phrases like 「ものすごく時間がかかった」 (it took a tremendous amount of time) or 「永遠に感じた」 (it felt like forever).
I will love you for eternity.
The universe has existed for eternity.
It was an endlessly long meeting.
Seek eternal and unchanging truth.