old age
词形变化：
形容词比较级: older | 形容词最高级: oldest | 名词: oldness |
同义词：
ancient | elderly | aged | antique | obsolete | former | mature | abandoned | stale | outworn | outdated | antiquated | olden | discontinued | discarded | advanced | older | secondhand | rusty | hoary | previous | grey | childhood | long-standing | deep-rooted | last | other | past it | old-fashioned | worn | out-of-date | on its last legs | archaic | quondam | onetime | sure-enough | honest-to-goodness | one-time | sometime | erstwhile |
反义词：