椅子（イス、isu）
- chair

The word 椅子 (pronounced イス) means "chair" in English. It refers to a piece of furniture designed for sitting, typically having a back, seat, and often legs. The term encompasses various types of chairs, from simple stools to armchairs and sofas.椅子 is a common and essential word in Japanese, used in both formal and informal contexts.

⚫︎椅子に座ってください。 Translation: Please sit on the chair. ⚫︎新しい椅子を買いました。 Translation: I bought a new chair. ⚫︎この椅子はとても快適です。 Translation: This chair is very comfortable.

⚫︎You can use 椅子 in any situation where you're referring to a chair. ⚫︎It's straightforward and commonly used. ⚫︎When giving instructions: 椅子に座って (sit on the chair). ⚫︎When describing furniture: あの椅子はデザインがいい (that chair has a good design).

⚫︎The word is primarily written using kanji: 椅子. ⚫︎The hiragana reading is イス. ⚫︎Katakana: イス is also used, particularly for foreign loanwords. For example when referring a chair name, like "office chair". ⚫︎There is no variation in the okurigana.

There aren't many direct synonyms for "chair" as the word椅子 is already very general. However, depending on the specific type of chair, you might use: ⚫︎ソファー (sofa) - for a sofa or couch. ⚫︎ベンチ (bench) - for a bench. ⚫︎スツール (stool) - for a stool.

There isn't a direct antonym for "chair," but you could use words related to not sitting: ⚫︎立つ (tatsu) - to stand. ⚫︎寝る (neru) - to sleep/lie down.

彼は椅子に座って本を読んでいます。 ・Translation: He is sitting on the chair and reading a book. ・Explanation: This sentence describes someone's current activity (reading a book while sitting) and uses 椅子 to specify the place where they are sitting.

このレストランの椅子はちょっと硬いですね。 ・Translation: The chairs in this restaurant are a bit hard, aren't they? ・Explanation: This sentence is an observation about the comfort of the chairs in a restaurant. It uses 椅子 to refer to the seating and expresses an opinion about their quality.

The kanji 椅子 is made up of two characters: 椅 and 子. ⚫︎椅 (i) itself does not have an independent meaning; it is solely used in forming the word 椅子. ⚫︎子 (shi, ko) means "child." Although 子 is used, the etymology of the kanji combination for "chair" is unclear.