na-adjective, noun which may take the genitive case particle 'no', noun
all sorts of; various; miscellaneous
Describes a diverse, mixed collection of things or people. Often used in formal or written contexts. As a yojijukugo, it carries a slightly literary or emphatic tone.
会場には種々雑多な人々が集まった。
All sorts of people gathered at the venue.
彼の机の上には種々雑多な書類が積まれている。
Miscellaneous documents are piled up on his desk.
多種多様 also means 'diverse', but focuses on many kinds and forms. 種々雑多 adds a nuance of being jumbled or miscellaneous.
Standard kanji spelling for this yojijukugo.
Alternate spelling using 種種 instead of 種々; less common but valid.
A yojijukugo composed of 種々 (various kinds) and 雑多 (miscellaneous, motley). The exact historical derivation is uncertain, but it follows a common pattern of combining two two-kanji compounds with similar meanings for emphasis.