千（せん、sen）
- thousand

The Japanese word 千 (千, せん) means "one thousand." It is a number representing ten hundreds.

⚫︎ 千円 Translation: One thousand yen (Japanese currency) ⚫︎ 千人 Translation: One thousand people ⚫︎ 千年の歴史 Translation: A thousand years of history

千 is used as a counter in the same way as other numbers. It is used to quantify things in sets of one thousand. It is also used in time expressions (e.g., 千年前 - a thousand years ago) and in abstract contexts to indicate a large quantity or duration.

⚫︎ The kanji for 千 (千) is 千. ⚫︎ The hiragana reading is せん. ⚫︎ There are no other standard ways to write this word. ⚫︎ Okurigana (suffix hiragana) is not used with this word.

⚫︎ There aren't direct synonyms for the number one thousand. One can express similar concepts by using phrases like 多数 (tasuu - many) or 莫大 (bakudai - huge) when referring to a large quantity, but these are not direct numerical equivalents.

⚫︎ There are no direct antonyms for a specific number. However, if referring to a small quantity, words like 少数 (shousuu - few) or specific numbers less than 1,000 would be antonymous in meaning.

この本は千ページあります。 ・Translation: This book has one thousand pages. ・Explanation: This sentence uses 千 to specify the number of pages in the book.

あの店には千種類の商品があります。 ・Translation: That store has one thousand kinds of products. ・Explanation: This sentence uses 千 to indicate the variety of products in the store.

The kanji 千 (千) originated from a pictograph depicting a person. Over time, it evolved to represent the number "one thousand." The exact reason for the association is not fully known, but it's believed to relate to the abundance or largeness associated with a large quantity. The use of this kanji can be traced back to ancient Chinese writings and was later adopted into Japanese.