零・０・〇|れいrei[1]atamadaka (head-high)

1. nounzero; nought

• RelatedなしNeutralMeans 'none' or 'without', not a number; often seen in tables as 「有り・無し」. Focuses on presence or absence rather than a count.
• Related皆無かいむWrittenMeans 'not even one', as in 「可能性は皆無だ」; more written/formal than 「ゼロ」.
• Related無むNeutralRefers to nothingness, a state where nothing exists; mostly a prefix or philosophical concept, as in 「無からの出発」.
• Related絶無ぜつむWrittenWritten/formal prose for 'absolutely none' of something of the same kind, as in 「事故は絶無だ」; the tone is extremely strong.
• Antonym有ゆうWrittenMeans existence or possession, mainly opposed to 「無」 and mostly in compounds like 「有無」; its contrast with 「零」 is only presence vs. absence.
• AntonymありFormalThe counterpart of 「無し」, used mainly in tables to mark presence, as in 「駐車場あり」.

Use 「零」 or 「ゼロ」 for the number zero. For 'none/without' use 「無し」; for 'not even one' in formal prose, 「皆無」 or 「絶無」; for philosophical nothingness, 「無」. In tables, presence is 「あり」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 零れい。ゼロ。漢字かんじ表記ひょうきの数かずで、アラビア数字あらびあすうじの0に相当そうとうする位置いちに書かかれることがある。