五十日

Japanese

Etymology 1

Compound of 五(ご) (go, “five”) + 十(とお) (tō, “ten”) + 日(ひ) (hi, “day”).

The hi changes to bi as an instance of rendaku (連濁).

Noun

五(ご)十(とお)日(び) • (gotōbi) ^{←ごとをび (gotowobi)?}

1. the days of a month that are multiples of 5 or 10 (as financial transactions in Japan are most frequent on these days, institutions and roads are usually crowded):
   1. 五日 (itsuka, go-nichi, “fifth (5th) day”)
   2. 十日 (tōka, jū-nichi, “tenth (10th) day”)
   3. 十五日 (jūgo-nichi, “fifteenth (15th) day”)
   4. 二十日 (hatsuka, nijū-nichi, “twentieth (20th) day”)
   5. 二十五日 (nijūgo-nichi, “twenty-fifth (25th) day”)
   6. 三十日 (misoka, sanjū-nichi, “thirtieth (30th) day”)

Etymology 2

Kanji in this term
五	十	日
Grade: 1	Grade: 1	か Grade: 1
irregular		kun'yomi

Compound of 五十(い) (i, “fifty”, combining form) + 日(か) (ka, “day”).

Noun

五十日(いか) • (ika) 

1. fifty days
   • c. 1028-1107, Eiga monogatari (volume 1, page 32)

     はかなう御(み)五十(い)日(か)なども過(す)ぎもていきて、生(う)まれ捨(す)て三月(みっか)といふに、七月(しちがつ)廿(にじゅう)三(さん)日(にち)に東宮(とうぐう)にたゝせ給(たまへ)ぬ。

     hakanau mi-ika nado mo sugitemoteikite, umare sute mikka to iu ni, shichi-gatsu nijūsan ni dōgū ni tatase tamaenu.

     (please add an English translation of this example)

   • c. 1080s, Sagoromo monogatari (volume 2, page 182)

     まことに、かの若宮(わかみや)の御(み)五十(い)日(か)にもなりぬれば、かゝる程(ほど)も、「いかでかは」とて、内裏(だいり)より、よろづに扱(あつか)はせ給(たまひ)けり。

     makoto ni, ka no wakamiya no mi-ika ni mo narinureba, kakaru hodo mo, “Ikade-kawa” tote, dairi yori, yorozu ni atsukawase-tamaikeri.

     (please add an English translation of this example)

2. Short for 五十日の祝 (ika no iwai): a Heian-period celebration on the 50th day after a child's birth
3. Short for 五十日の餅 (ika no mochii): mochi fed to the child during ika no iwai

Derived terms

• 五十(い)日(か)の祝(いわい) (ika no iwai)
• 五十(い)日(か)の餅(もちい) (ika no mochii)