Meaning and Usage
"永久" (えいきゅう) means "eternity" or "perpetuity," referring to something lasting forever or indefinitely. It is often used in formal contexts such as contracts, legal terms, or poetic expressions about lasting states.
Common Collocations
- 永久に有効 (えいきゅうにゆうこう): valid forever, often used in legal or official documents.
- 永久保存版 (えいきゅうほぞんばん): permanent edition or version, commonly used for books, albums, or media meant to be kept indefinitely.
- 永久に続く (えいきゅうにつづく): to continue forever, used in emotional or abstract contexts like friendship or love.
Nuances and Register
"永久" carries a formal and somewhat literary tone. It is less common in casual conversation where simpler words like "ずっと" or "いつまでも" might be used. When using "永久," the speaker implies a strong sense of unchanging permanence.
Common Mistakes
Learners sometimes confuse "永久" with "永遠" (えいえん), which also means eternity but is more poetic and abstract. "永久" is often used for tangible or legal permanence, while "永遠" is more emotional or philosophical. Remember to use "永久" when emphasizing lasting validity or permanence in concrete contexts.