Translation guide
The English word "bounds" can refer to physical limits, legal or moral limits, or the boundaries of an area. This guide covers how to express these concepts naturally in Japanese.
Referring to the edges or limits of a physical area, such as a property, field, or region.
General term for boundary or border between areas. Can be used for property lines, national borders, or abstract boundaries.
この川が県の境界です。
This river is the prefectural boundary.
境界線を越えないでください。
Please do not cross the boundary line.
Refers to a range, scope, or extent. Often used for areas within which something is allowed or exists.
この公園の範囲内で遊んでください。
Please play within the bounds of this park.
Limit or boundary, often emphasizing the maximum extent or a point beyond which something cannot go.
この土地の限界はあの木までです。
The bounds of this land extend to that tree.
Referring to acceptable behavior, rules, or restrictions.
Used for the scope of what is permitted or acceptable. Common in legal and formal contexts.
法律の範囲内で行動しなければならない。
You must act within the bounds of the law.
それは常識の範囲を超えている。
That goes beyond the bounds of common sense.
Limit or bound, often used for what is tolerable or permissible. Emphasizes a threshold.
Frame or framework; metaphorically, the bounds or constraints of a system or set of rules.
Referring to an area where play is not allowed or entry is forbidden.
Loanword from English, commonly used in sports like golf or tennis. Also used in general contexts for off-limits areas.
ボールがアウトオブバウンズになった。
The ball went out of bounds.
Outside the playing area; used in sports like sumo or baseball.
Restricted area; used for places where entry is prohibited, not necessarily sports.
この先は立ち入り禁止区域です。
Beyond here is out of bounds.
Describing rapid improvement or growth.
Adverb meaning 'dramatically' or 'by leaps and bounds'. Used with verbs of progress or improvement.
彼の日本語は飛躍的に上達した。
His Japanese improved by leaps and bounds.
Rapidly, quickly. A more general term for fast progress.
技術が急速に進歩している。
Technology is advancing by leaps and bounds.
範囲 (はんい) is the most versatile for 'bounds' in the sense of scope or extent. 限界 (げんかい) emphasizes a hard limit or breaking point. 境界 (きょうかい) is specifically a border or dividing line between two areas.
Avoid directly translating 'bounds' as a plural noun. Japanese often uses singular concepts like 範囲 or 限界. The English phrase 'out of bounds' is often rendered as アウトオブバウンズ or 場外, not a literal translation.
公園の範囲内にいてください。
Stay within the bounds of the park.
彼の行動は良識の範囲を超えていた。
His behavior exceeded the bounds of decency.
ボールはアウトオブバウンズです。
The ball is out of bounds.
It went beyond the bounds of patience.
You can act freely within the bounds of the rules.
ボールが場外に出た。
The ball went out of bounds.