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This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

有無

Readings

Kana: うむ、ゆうむ
Romaji: umu, yuumu
Kana
Romaji

Definitions

noun
1

existence or nonexistence; presence or absence

See also: 有り無し
2

consent or refusal; yes or no

3

flag indicator; presence or absence marker

(Computer terminology)

Kanji

有
Readings: ユウ、 ウ、 あ.る
Meanings: possess, have, exist, happen, occur, approx
無
Readings: ム、 ブ、 な.い
Meanings: nothingness, none, ain't, nothing, nil, not

Example Sentence

排卵(はいらん)の有無(うむ)を調(しら)べる方法(ほうほう)はありますか？
➥Is there some way to check for ovulation?
Full Entry➤