お札（おさつ、osatsu）
- bill (paper money)

The Japanese word お札, read as おさつ, primarily means "paper money" or "banknote." It refers to the physical pieces of currency used in Japan for transactions. The word conveys the idea of a flat, rectangular piece of paper with a value printed on it, issued by the government. It's the standard term for the bills you use to buy things. The word can be used for any denomination of Japanese currency.

⚫︎ 一万円札 Translation: Ten-thousand yen bill ⚫︎ このお札、偽物かもしれない。 Translation: This bill might be fake. ⚫︎ お札を両替する Translation: To exchange paper money

You can use お札 in everyday conversations when talking about money, making purchases, or describing the currency you possess. It is used when discussing the bills themselves, rather than the coins or the act of spending money. It is a common and practical word.

⚫︎The standard way to write this word is お札 (hiragana + kanji). ⚫︎ The kanji is 札. ⚫︎ The お is a polite prefix. ⚫︎ There are no common variations in the okurigana.

There are some less common, and more technical terms, but no direct synonyms.

There are no direct antonyms for お札, but words related to coins or other forms of payment could be considered opposites in a conceptual sense. For example: ⚫︎ 硬貨 (こうか) - coin.

財布の中にたくさんお札が入っています。 ・Translation: There are many bills in my wallet. ・Explanation: This sentence describes the contents of a wallet, mentioning that it contains several bills (paper money).

自動販売機でお札が使えますか。 ・Translation: Can I use bills in the vending machine? ・Explanation: This question asks about the payment method accepted by a vending machine, specifically if bills can be used.

The kanji 札 originally referred to a "tag," "label," or "ticket." Over time, it came to be used for paper money because the bills were like official tags or certificates of value issued by the government. The お is an honorific prefix, adding a layer of politeness to the word.