定規（じょうぎ、jougi）
- ruler

The Japanese word 定規定規, pronounced じょうぎ, refers to a ruler or a straightedge used for measuring length and drawing straight lines. It is a common tool used in various fields such as mathematics, drawing, design, and carpentry. 定規定規 can also be used to refer to other measuring instruments that are used for creating straight lines or accurate measurements.

⚫︎定規定規を使って、線を引いてください。 Translation: Please draw a line using the ruler. ⚫︎ この定規定規は、とても正確です。 Translation: This ruler is very accurate. ⚫︎ 彼は設計の仕事で定規定規をよく使います。 Translation: He often uses a ruler in his design work.

You use 定規定規 when you need to measure distances, draw straight lines, or check if something is straight. It's used in situations where precision is important. It can be used in both formal and informal settings. You might ask someone to pass you the 定規定規 or describe something using it.

定規定規 is typically written in kanji as 定規, with the reading in hiragana as じょうぎ. There are no other common ways to write this word, nor are there variations in the okurigana.

There aren't many direct synonyms for 定規定規, as it is a specific tool. However, you might use more general terms related to measurement, depending on the context.

There is no direct antonym for 定規定規. The concept of measurement being "opposite" is not applicable.

その図を描くには、きちんとした定規定規が必要です。 ・Translation: You need a proper ruler to draw that diagram. ・Explanation: This sentence illustrates the need for a ruler (定規定規) for accurate drawing.

この定規定規の目盛りはミリメートルです。 ・Translation: The markings on this ruler are in millimeters. ・Explanation: This sentence explains the units of measurement used on the ruler.

The word 定規 is composed of two kanji: 定 (tei/jou - to decide, fix, determine, etc.) and 規 (ki - standard, rule, measure). Together, they imply a "fixed standard" or a "measuring standard," which accurately reflects the function of a ruler as a tool for creating straight lines and taking measurements.