限りない・限り無い|かぎりないkagirinai

1. i-adjectiveunlimited; endless; boundless; infinite

• Synonym果てしないはてしないNeutralMeans having no end; mostly describes space, roads, or arguments, as in 「果てしない海」. 「限りない」 more often modifies emotions and possibilities.
• Synonym無限むげんWrittenWritten/formal prose. A noun or adjectival noun for infinity, as in 「無限の可能性」「無限の愛」; used in a wide range of contexts.
• Synonym無制限むせいげんNeutralMeans unrestricted, as in 「無制限に使える」; about there being no limit by rule, not endless emotion.
• SynonymエンドレスCasualLoanword; going round and round without end, used mostly for music and games.
• Synonym計り知れないはかりしれないNeutralMeans immeasurable, as in 「計り知れない影響」; stresses that the degree is beyond fathoming.
• Synonym無尽蔵むじんぞうNeutralAn inexhaustible supply; stresses how plentiful the resources are, as in 「無尽蔵の資源」.
• Synonym果てしがないはてしがないNeutralSame meaning as 「果てしない」—no end, stretching on without bounds; 「果てしない」 or 「果てがない」 is generally more common.
• SynonymきりのないCasualColloquial; never-ending, often with a note of exasperation, as in 「欲を言えばきりがない」.
• Related広大無辺こうだいむへんWrittenFour-character idiom in written/formal prose; vast and boundless, describing immense space or Buddhist law.
• Related無窮むきゅうWrittenEternal and endless; written/formal prose with an archaic elegance, as in 「天壌無窮」.
• Related無辺際むへんさいWrittenBoundless; a rare written/formal term stressing the vastness of space.
• Related止めどないとめどないCasualColloquial; unstoppable, often for tears or words flowing on and on, as in 「とめどなく涙が流れる」.
• Related無極むきょくWrittenA term from philosophy and thought meaning the limitless; rare.
• Related無限大むげんだいNeutralInfinity; a mathematical term, also used colloquially as hyperbole for possibility.
• Related空々漠々くうくうばくばくWrittenWritten/formal idiom; vast, empty, and hazy—stresses emptiness and vagueness.
• Antonym有限ゆうげんWrittenFinite; the counterpart of 「無限」, leaning toward written/formal prose.
• Antonym限りあるかぎりあるNeutralThe direct opposite of the headword: finite, as in 「限りある資源」.

Use 「限りない」 for what has no limit in feeling or scope—love, gratitude, possibility, as in 「限りない愛情」. For endless space or roads say 「果てしない」; for infinity, 「無限」; for something that never lets up, 「きりがない」. The opposite is 「限りある」. The rest are narrower: 「無制限」 for no rule-based limits, 「エンドレス」 for music and games, 「止めどない」 for tears or words, 「計り知れない」 for immeasurable degree, 「無尽蔵」 for inexhaustible resources; 「無窮」「広大無辺」「無辺際」「空々漠々」「無極」 are literary or rare.

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

1. 際限さいげんのないさま。
2. 最高さいこうであるさま。