十二（じゅうに、juuni）
- twelve

十二 (じゅうに) means "twelve." It's a numerical word representing the quantity of twelve. It's used in various contexts, including counting, time, dates, and measurements. The word combines 十 (じゅう), meaning "ten," and 二 (に), meaning "two." Thus, 十二 is the number formed by adding ten and two together.

⚫︎リンゴが 十二 個あります。 Translation: There are twelve apples. ⚫︎今日は 十二 月です。 Translation: Today is December. ⚫︎彼は 十二 歳です。 Translation: He is twelve years old.

You use 十二 when referring to the number twelve. ⚫︎It's used in counting objects: "twelve books," "twelve people," etc. ⚫︎It's used to indicate a time: 12:00 (twelve o'clock). ⚫︎It's used in dates: the twelfth day of the month. The usage is straightforward; the context will clarify what "twelve" is referring to.

十二 is typically written with kanji 十二. ⚫︎The reading is じゅうに (in hiragana). ⚫︎There are no other common ways to write this word, and the okurigana is not applicable here.

There aren't any direct synonyms for "twelve." However, you could use phrases to convey the same meaning: ⚫︎"a dozen" (although this usually refers to a specific group of twelve) ⚫︎"12" (using Arabic numerals).

The antonym of 十二 would be a number less than twelve, for example: ⚫︎十一 (じゅういち) - eleven ⚫︎一 (いち) - one ⚫︎ゼロ (zero)

ケーキを 十二 個買いました。 ・Translation: I bought twelve cakes. ・Explanation: This sentence uses 十二 to state the quantity of cakes purchased.

彼女は 十二 時間寝ました。 ・Translation: She slept for twelve hours. ・Explanation: This sentence uses 十二 to indicate the duration of sleep.

The etymology is simple. ⚫︎十二 is a compound word formed from the numbers 十 (ten) and 二 (two). ⚫︎The kanji 十 (ten) comes from a drawing of a vertical line. ⚫︎The kanji 二 (two) comes from a drawing of two horizontal lines.