甚大|じんだいjindai[0]heiban (flat)
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- na-adjective, nounvery great; enormous; serious
Conjugation
| Plain form | 甚大(じんだい) |
|---|---|
| Polite (desu) | 甚大です(じんだいです) |
| Negative (dewa nai) | 甚大ではない(じんだいではない) |
| polite (dewa arimasen) | 甚大ではありません(じんだいではありません) |
| Past (datta) | 甚大だった(じんだいだった) |
| Past negative (dewa nakatta) | 甚大ではなかった(じんだいではなかった) |
| Te form (de) | 甚大で(じんだいで) |
| Adverbial (ni) | 甚大に(じんだいに) |
| Conditional (nara) | 甚大なら(じんだいなら) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym膨大ぼうだいWrittenWritten/formal prose. Describes sheer quantity, as in 「膨大な資料」; 「甚大」 is about the degree of damage, influence or effect.
- Synonym莫大ばくだいWrittenWritten/formal prose. Used for huge sums of money and quantities, as in 「莫大な費用」; 「甚大」 speaks of damage instead.
- Synonym巨大きょだいNeutralNeutral. Refers to volume or scale, as in 「巨大地震」; 「甚大」 speaks of degree.
- Synonym絶大ぜつだいWrittenWritten/formal prose. Means immense, typically of power or trust, as in 「絶大な人気」.
- Related甚だしいはなはだしいWrittenWritten/formal prose. An adjective for severe degree, often with misunderstandings or damage; very close to 「甚大」.
- RelatedものすごいCasualColloquial. Says something is astonishing or tremendous; 「甚大」 suits formal reporting.
- Related猛烈もうれつNeutralNeutral. Describes fierce momentum, as in 「猛烈な台風」; the emphasis is on force rather than degree.
- Related強烈きょうれつNeutralNeutral. Means intense, as in 「強烈な印象」; 「甚大」 is for damage.
- Related激甚げきじんWrittenWritten/formal prose. Describes violent disasters, as in 「激甚災害」; close in sense to 「甚大」.
- Related大変たいへんNeutralNeutral. Common in speech for something serious or terrible; 「甚大」 is the more formal choice.
- Related極大きょくだいWrittenWritten/formal prose. Means extremely large; in mathematics it also means a local maximum.
- RelatedとてつもないCasualColloquial. Says something is outrageous or astonishingly big; 「甚大」 is the formal option.
- Relatedど偉いどえらいCasualColloquial slang for something tremendous or remarkable.
- Antonym微小びしょうWrittenWritten/formal prose. Means extremely small — the opposite of 「甚大」.
- Antonym些少さしょうWrittenWritten/formal prose. Means a mere trifle, slight in amount — the opposite of 「甚大」.
Use 「甚大」 for enormous damage or influence, as in 「甚大な被害」「甚大な影響」. For sheer quantity pick 「膨大」, for huge sums 「莫大」, for physical size or scale 「巨大」. 「絶大」 pairs with power and trust; 「激甚」 and 「甚だしい」 are close written alternatives. 「甚大」 is formal; in speech prefer 「物凄い」「途轍もない」「ど偉い」 or 「大変」; 「猛烈」 and 「強烈」 stress force and intensity. 「微小」 and 「些少」 are the written opposites.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


