七歳 ななさい Also written 七才, 7歳, 7才 Meanings Noun, の-adjective seven-year-old; seven year old Kanji 七 seven. Read as なな. 歳 age. Read as サイ. Words containing 七歳 男女七歳にして席を同じゅうせず (だんじょななさいにしてせきをおなじゅうせず) after age 7, boys and girls should be kept apart Jinuma: Japanese Dictionary · Word lists