及(およ)び

および
conjunction
and, as well as (formal)
formalacademicbusinesslegalgrammatical
1. and, as well as
Formal conjunction used to connect nouns or noun phrases, equivalent to formal written 'and' in English.
氏名(しめい)及(およ)び住所(じゅうしょ)をご記入(きにゅう)ください。
Please fill in your name and address.
本人(ほんにん)及(およ)びその家族(かぞく)に適用(てきよう)されます。
This applies to the person and their family.
国内(こくない)及(およ)び海外(かいがい)での販売(はんばい)を予定(よてい)しています。
We plan to sell both domestically and overseas.
教育(きょういく)、医療(いりょう)及(およ)び福祉(ふくし)の分野(ぶんや)で活動(かつどう)する。
We operate in the fields of education, healthcare, and welfare.

Register: Formal/written. Used in:

  • Legal documents
  • Official forms
  • Business correspondence
  • Academic writing
  • News reports

FORMALITY SCALE ("and"):

  • と: neutral, everyday
  • や: listing examples (implies more)
  • 及(およ)び: formal, exhaustive
  • 並(なら)びに: even more formal, often for separate categories

Usage pattern: A及(およ)びB connects two items at the same level. When listing three or more items:

  • A、B及(およ)びC (A, B, and C)

VS. 並(なら)びに:

  • 及(およ)び: connects items at the same level
  • 並(なら)びに: connects larger groups or categories
  • Example: A及(およ)びB並(なら)びにC及(およ)びD = (A and B) and (C and D)

Caution: Using 及(およ)び in casual conversation sounds overly formal or stiff. Use と or や instead.

Related Words

Compare: 並(なら)びに (and (more formal, groups))
Related: 及(およ)ぶ (to reach, to extend to)
general
Added 2026.1.18 19:29 · Revised 2026.9.2 12:02
06500/06922_oyobi