２０

にじゅう

twenty; 20

２０代

にじゅうだい

(one's) 20s; twenties

２０日

はつか

20th day of the month

歳歳

さいさい

annual

２０面体

２０めんてー

icosahedron

２０年代

にじゅうねんだい

the '20s; the twenties

歳

さい

-years-old

年年歳歳

ねんねんさいさい

annually, every year, year in year out, from year to year

歳入歳出

さいにゅうさいしゅつ

annual income and expenditure

歳事

events of the year; happenings of the year

歳役

さいえき

labor system in which able-bodied men were required to work for periods in the capital (ritsuryō system)

歳費

さいひ

annual expenditure

ゼロ歳

ゼロさい

less than a year old

歳入

さいにゅう

annual revenue (government), annual income (government), budget receipts

何歳

なんさい

how old?, what age?

凶歳

きょうさい きょうとし

poor crop year

歳計

さいけい

annual account

太歳

たいさい

Taisai, one of the eight gods of the koyomi

万歳

まんざい ばんざい ばんぜい

crying "banzai" (or raising one's hands in the banzai gesture)