How to say "brilliance" in Japanese

Choosing the right word
  • 光沢こうたくJLPT N1approx.Common
    nounBrilliance as the sheen or polish of a surface — silk, lacquer, or metal. Think 'lustre': the smooth reflectiveness of a polished surface, not radiance or talent.
    この指輪ゆびわは光沢こうたくをうしなった。↗
    This ring lost its luster.
  • 輝きかがやきCommon
    nounBrilliance as radiance or sparkle — the shining of stars, jewels, or eyes, and figuratively the glow of a smile. It covers both literal brightness and figurative radiance.
    おまえの全すべてが俺おれの中なかで輝かがやきを放はなち続つづける。↗
    All of you in my memory is still shining in my heart.
  • 光彩こうさいCommon
    nounBrilliance in the sense of splendor — a dazzling, glorious shine. Use it where English 'splendor' would also fit, as for the resplendent brilliance of jewels or a ceremony.
  • 精彩せいさいCommon
    nounBrilliance as vividness or colorfulness — a lively, colorful brilliance more than a physical sheen. If you mean the polish of silk or metal, 光沢 is the word.
  • 英才えいさいCommon
    nounBrilliance of a person's mind or talent — 'genius' and 'unusual talent' are the core senses. It refers to exceptionally gifted people, never to light or shine.

Use 光沢 for the sheen or polish of a surface, 「輝き」 for shining or sparkling radiance, 光彩 for brilliant splendor, 精彩 for vivid colorfulness, and 英才 for brilliance of talent or mind.

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

Japanese equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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