(ずいいち)

ずいいち
noun
foremost; best; number one
1. foremost; best; number one; preeminent
The very best or most outstanding within a particular group or category. Always used with a preceding scope (e.g., 日本随一 — the best in Japan).
(かれ)社内(しゃない)随一(ずいいち)営業(えいぎょう)マンだ。
He is the best salesperson in the company.
ここは日本(にほん)随一(ずいいち)温泉地(おんせんち)だ。
This is Japan's foremost hot spring resort area.
世界(せかい)随一(ずいいち)技術力(ぎじゅつりょく)(ほこ)るメーカーに成長(せいちょう)した。
It has grown into a manufacturer that boasts the world's foremost technological capabilities.

Compound of (ずい) (follow/accompany) + (いち) (number one). Always preceded by a scope that specifies the group being compared.

COMMON PATTERNS:

  • 日本(にほん)随一(ずいいち)の~ (Japan's foremost ~)
  • 世界(せかい)随一(ずいいち)の~ (the world's foremost ~)
  • 社内(しゃない)随一(ずいいち)の~ (the company's best ~)
  • 業界(ぎょうかい)随一(ずいいち)の~ (the industry's foremost ~)

USAGE NOTE:
A formal expression of superlative praise. More literary and elevated than 一番(いちばん). Cannot be used without a preceding group or category — you cannot say just 随一(ずいいち) alone.