How to say "bounds" in Japanese

Choosing the right word
  • 限りかぎりCommon
    nounThe general word for a limit or bounds of extent, amount, or time; use it for abstract 'bounds' such as those of knowledge, ability, or endurance.
    彼かれの好奇心こうきしんには限かぎりがなかった。↗
    His curiosity knew no bounds.
  • 限度げんどJLPT N2approx.Common
    nounCovers 'bounds' as a limit of degree or amount — how far something can go before it is too much, as in there being limits to what one can endure.
    物事ものごとには限度げんどがある。↗
    There is a limit to everything.
  • 際限さいげんCommon
    nounIn practice it appears almost only in negative expressions such as 際限がない, 'endless; without bounds', so it is seldom the word you want when 'bounds' is used on its own.
    彼女かのじょのお金かねへの執着心しゅうちゃくしんには際限さいげんがない。↗
    Her love of money is without bounds.
  • 境界きょうかいJLPT N2approx.Common
    nounCovers 'bounds' in the concrete sense of a boundary or border — the line separating one area, such as a piece of land or a territory, from another.
    彼かれらは境界きょうかいを越こえてスペインに入はいった。↗
    They crossed the border into Spain.
  • ほどJLPT N4approx.Common
    nounCovers 'bounds' as degree or extent — how much is appropriate or how far to go, as in saying there is a limit to something; usually written in kana alone.

Choose 境界 for physical boundaries between areas, 限度 or 「ほど」 for limits of degree or amount, 「限り」 for general limits or bounds of extent or time, and 際限 chiefly in negative phrases meaning 'endless'.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
See also

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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