絶大|ぜつだいzetsudai[0]heiban (flat)

1. na-adjective, nountremendous; immense; enormous; colossal; stupendous; huge
   天才てんさいとは従来じゅうらい、先天的せんてんてきに絶大ぜつだいな努力どりょくをなし得える能力のうりょくを備そなえた者ものとの定義ていぎが下くだされてきた。↗

   Genius has been defined as a supreme capacity for taking trouble.

• SynonymものすごいCasualColloquial for something astonishingly intense, often with a frightening feel, as in 「ものすごい音」; more casual than 「絶大」.
• Synonym凄まじいすさまじいNeutralSuggests ferocious, overwhelming intensity; typically describes sounds and scenes rather than trust or popularity.
• SynonymすごいCasualThe most common colloquial all-purpose word for 'amazing'; a vague, sweeping evaluation, and less formal than 「絶大」.
• Synonym甚大じんだいWrittenWritten/formal, for an extremely great extent, above all of serious damage or impact, as in 「甚大な被害」; typical of disaster contexts.
• Synonym莫大ばくだいNeutralFor huge sums or amounts, as in 「莫大な費用」; it is about the size of figures, while 「絶大」 is about degree of trust or support.
• SynonymとてつもないCasualColloquial for something absurdly, unbelievably big; stresses that it is beyond imagination, unlike the degree sense of 「絶大」.
• Synonym極大きょくだいWrittenAcademic and written: 'maximum', and in mathematics a local maximum; 「絶大」 instead speaks of popularity or trust.
• Synonym至大しだいWrittenRare written word for the utmost in size, with a classical flavour; seldom seen in modern Japanese.
• Related膨大ぼうだいNeutralFor vast quantity or scale, as in 「膨大なデータ」; it stresses sheer volume, while 「絶大」 stresses the extreme degree of trust, popularity or influence.
• Related甚だしいはなはだしいWrittenWritten/formal: marks an extreme degree, mostly with negative things like 「甚だしい誤解」; not used for popularity or trust.
• RelatedおびただしいWrittenWritten/formal for enormous numbers, often with awe or a negative shade, as in 「夥しい数」.
• RelatedでかいCasualColloquial and somewhat rough, for physically big things; about bulk, not about trust or popularity.
• Related大おおWrittenThe same word in its archaic guise, seen mainly in waka poetry and fixed expressions rather than modern prose.
• Related大きいおおきいNeutralThe everyday default for 'big', covering both size and degree, as in 「影響が大きい」; 「絶大」 is more written and more extreme.
• RelatedおっきいCasualCasual spoken variant of 「大きい」, also common in children's speech; mostly used of things.
• RelatedえらいNeutralMeans admirable or high-ranking, and colloquially 'an awful lot'; a mixed-use word, unlike the focused 「絶大」.
• Related巨大きょだいNeutralFor physical hugeness of objects or scale, as in 「巨大な建物」; about size, while 「絶大」 is about degree of trust or popularity.
• Related恐ろしいおそろしいNeutralPrimarily 'frightening', but colloquially also an intensifier meaning 'extremely', as in 「恐ろしく速い」, where no fear need be involved.
• Related大きおおきWrittenA prefix meaning large or high in rank, found mostly in old language and compounds; everyday speech uses 「大きな」 or 「大きい」.
• Related大いおおいWrittenAn archaic form of 'big' that survives in written phrases such as 「大いなる」 and 「大いに」.
• Related洪大こうだいWrittenRare written word for grand immensity, mostly in 「洪大な恩」; leans toward kindness or grace received.
• Relatedど偉いどえらいCasualKansai colloquialism for something tremendously impressive; exaggerated and informal.
• RelatedどでかいCasualEmphatic slang for something especially big; coarse and exaggerated, used mostly of physical size.
• Related馬鹿でかいばかでかいCasualPlayful slang for something ridiculously large; teasing in tone, used mostly of physical bulk.
• Antonym微小びしょうNeutralAntonym: microscopic, extremely small — the opposite of the immensity 「絶大」 conveys.
• Antonym僅少きんしょうWrittenWritten/formal antonym meaning scant or slight, as in 「僅少の差」.

Use 「絶大」 for an extreme degree of trust, popularity or influence, as in 「絶大な人気」 and 「絶大な信頼」. For sheer quantity or scale pick 「膨大」, for huge sums 「莫大」, for severe damage 「甚大」, and for physical size 「巨大」. Colloquial options like 「凄い」 and 「でかい」 suit casual talk, while 「夥しい」, 「甚だしい」 and 「洪大」 are written or rare. The opposites are 「微小」 and 「僅少」.

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

1. この上うえなく大おおきいさま。