エイプリルフール

えいぷりるふーる
noun
April Fools' Day
time-generalculture
1. April Fools' Day
April 1, the day when people play harmless tricks and tell jokes as lies. In Japanese the word names the day itself, not the person fooled.
今日(きょう)はエイプリルフールだ。
Today is April Fools' Day.
エイプリルフールの嘘(うそ)にだまされた。
I was fooled by an April Fools' joke.
毎年(まいとし)エイプリルフールになると、企業(きぎょう)がSNSで冗談(じょうだん)の新商品(しんしょうひん)を発表(はっぴょう)する。
Every year on April Fools' Day, companies announce joke products on social media.

Borrowed from English "April Fool" but used for the day. An older Japanese name is 四月馬鹿(しがつばか).

Common collocations

Watch out

The English sense "a person who is fooled" does not carry over; エイプリルフール always means the day.

general
Added 2026.10.3 4:33 · Revised 2026.10.3 4:36
31000/31452_eipurirufuuru