随一

• Reading: ずいいち
• Romaji: zuiichi
• Kanji breakdown: 随 (zui) — throughout, among; 一 (ichi) — one, first
• Pronunciation: /zɯiitɕi/

Meaning

The best; foremost; number one among a group.

A noun used after a group specifier to indicate the single best or most outstanding member. For example, 日本随一の企業 (Japan's foremost company). It is more emphatic than 一番 and carries a slightly literary or formal feel. Often seen in superlative descriptions in journalism and advertising.

Examples

1. 彼女はこの分野において世界随一の研究者だと認められている。 She is recognized as the world's foremost researcher in this field.
2. 地域随一の繁華街として長年にわたって賑わっている。 It has thrived for many years as the region's premier entertainment district.
3. 国内随一のシェアを誇るメーカーが新製品を発表した。 The manufacturer boasting the nation's top market share announced a new product.

Usage Guide

Context: journalism, advertising, superlative description

Tone: admiring

Origin & History

From 随 (following, accompanying; throughout) and 一 (one, first). The sense of 随 here is 'among all' — making 随一 literally 'first among all'.

Cultural Context

Era: Modern

Generation: Adults

Social background: Educated