数々・数数|かずかずkazukazu[1]atamadaka (head-high)

1. no-adjective, adverbmany; numerous; various; large number of
   彼かれの演説えんぜつには数々かずかずのすばらしい言い回いいまわしが含ふくまれていた。↗

   His speech contained many fine phrases.

• Synonym種々しゅじゅWrittenWritten/formal prose. Points to many different kinds, as in 「種々の問題」; 数々 stresses sheer number, while 種々 stresses variety of types.
• Related多彩たさいNeutralNeutral. Suggests rich, colourful variety, as in 「多彩な才能」; it carries a positive flavour, unlike the plain counting sense of 数々.
• Related多種たしゅWrittenWritten/formal prose. Means simply that there are many kinds, as in 「多種の製品」; it counts types rather than items, unlike 数々.
• Related多種多様たしゅたようWrittenWritten/formal prose. Describes a great variety, as in 「多種多様な意見」; it stresses richness and range, where 数々 stresses a large number.
• Related千差万別せんさばんべつWrittenWritten/formal prose. Stresses that things differ greatly from one another, rather than that there are many of them as with 数々.
• Related多様性たようせいWrittenWritten/formal prose. An abstract noun for diversity, as in 「生物多様性」; it names the concept, not a quantity like 数々.
• Related諸般しょはんFormalFormal. Appears mostly in set phrases such as 「諸般の事情」; stiffer and more limited in use than 数々.
• RelatedまちまちWrittenWritten/formal prose. Says each one is different, as in 「意見がまちまち」; it stresses lack of uniformity, not large numbers.
• Related千姿万態せんしばんたいWrittenWritten/formal prose. Evokes endlessly varied forms and appearances; rarer than 数々 and focused on shape rather than count.
• Related千般せんぱんFormalFormal. A literary word meaning all manner of things; hardly seen in modern Japanese, unlike the everyday 数々.
• Related万状ばんじょうWrittenWritten/formal prose. Refers to many different states or aspects; rare in modern usage.
• Related種々雑多しゅじゅざったWrittenWritten/formal prose. Suggests a jumbled miscellany, as in 「種々雑多な品」; it adds a disorderly nuance that 数々 does not have.
• Related千態万状せんたいばんじょうWrittenWritten/formal prose. Describes countless varied forms; a literary set phrase focused on myriad shapes, not on quantity like 数々.

Use 「数々」 for a large number of things, as in 「数々の名作」 or 「数々の賞」. When the point is many kinds rather than many items, choose 「種々」 or 「多種多様」; for rich, positive variety 「多彩」; for things that differ 「まちまち」. The rest are written or formal: 「諸般」 in set phrases, 「多様性」 for the concept of diversity, and 「千般」「万状」 are rare today.

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

1. 多数たすう。たくさん。いろいろ。