twenty years
Archaic term for a period of twenty years. In modern Japanese, 二十年 (にじゅうねん) is the standard expression.
The expression 'hatatose' is used in old waka poetry.
The modern standard word for 'twenty years'. はたとせ is its archaic equivalent.
Standard kanji spelling for this archaic term meaning 'twenty years'.
Alternate kanji spelling; less common than 二十歳.
Derived from はた (twenty) + とせ (years, counter for years). The exact historical derivation of はた is uncertain, but it is an old native Japanese numeral.