線（せん、sen）
- line

The Japanese word 線 (せん) primarily means "line" or "wire." It refers to a linear mark, a pathway, or a connection. It can also figuratively represent a boundary, a limit, or a route. The meaning shifts slightly depending on the context, often relating to something that is straight, thin, or elongated.

⚫︎この線は真っ直ぐです。 Translation: This line is straight. ⚫︎電線の修理をしています。 Translation: I am repairing the electrical wire. ⚫︎人生の線を描く。 Translation: To chart a course in life.

線 is a versatile word used in various situations. You would use it: ⚫︎When describing a physical line drawn with a pen or pencil. ⚫︎When referring to lines on a map, in a diagram, or on a graph. ⚫︎When talking about wires in electrical circuits. ⚫︎In metaphorical senses, like "a line of thought" or "the line of a story." ⚫︎When talking about a route or path, like train lines or bus routes.

The word is written as: ⚫︎Kanji: 線 ⚫︎Hiragana: せん There are no major variations in the okurigana. The Kanji 線 is almost always used when writing the word.

⚫︎ライン (rain): This is a loanword from English, often used in a more general sense, similar to "line." ⚫︎筋 (すじ): This can mean "line" but more often refers to a streak or a vein. ⚫︎道 (みち): This can mean "way," "road," or "path" and can sometimes be used as a synonym for 線 in terms of routes.

The antonyms depend on the context, but some possibilities include: ⚫︎点 (てん): "point" or "dot," as opposed to a line. ⚫︎面 (めん): "surface" or "face." ⚫︎空間 (くうかん): "space" or "area," the opposite of a specific 線.

地図に赤い線を引いて、目的地を示しました。 ・Translation: I drew a red line on the map to show the destination. ・Explanation: The sentence uses 線 to describe a physical line drawn on a map.

電話線が繋がらないので、修理を依頼しました。 ・Translation: Since the phone line is not connected, I requested a repair. ・Explanation: This sentence uses 線 to refer to a communication line, specifically a telephone line.

The kanji 線 is a combination of two parts. The left side is 糸 (いと), meaning "thread" or "string." The right side is 泉 (せん), meaning "spring" or "source." The original meaning might have related to a thread emerging from a source, which gradually developed its meaning to be any kind of linear feature.