Translation guide
In Japanese, expressing 'straight line' depends on whether you mean a geometric line, a direct path, a row of things, or a metaphorical directness. The most common word is 直線 (chokusen) for geometric lines, but other expressions are used for queues, routes, and abstract directness.
A line that does not curve, in mathematics or drawing.
Moving or going in a straight line without detours.
A row or queue arranged in a straight line.
Means 'one line' or 'single file'. Used for people or objects arranged in a straight row.
Being direct or straightforward in behavior, communication, or life path.
Adjectival phrase meaning 'straight' or 'direct', used for personality or approach.
He has a straightforward personality.
直線 is a noun meaning a geometric straight line. まっすぐ is an adverb/adjective meaning 'straight' in direction or character. Use 直線 for lines in drawings or math, and まっすぐ for giving directions or describing directness.
This straight line continues infinitely.
Emphasizes a single, uninterrupted straight line. Often used for paths, roads, or arrangements that are perfectly straight.
This road stretches out in a straight line.
Adverb meaning 'straight' in terms of direction. Used with verbs of movement to indicate going straight ahead.
Go straight along this road.
He went straight home.
Adverbial phrase meaning 'in a straight line', often implying a direct, unwavering path.
The ball flew in a straight line.
The students lined up in a straight line.
Literally 'straight line/queue'. Used when emphasizing the straightness of the row.
Please form a straight line.
Describes someone who is single-minded or unwavering, often in pursuit of a goal.
His single-minded attitude toward his dream is amazing.