ぴかぴかpikapika

1. adverb (with と), no-adjective, na-adjective, suru verbwith a glitter; with a sparkleピッカピカ and ビカビカ are more emphatic
   その車くるまはワックスがかけられてピカピカしている。↗

   The car is waxed and shining.
2. no-adjective, na-adjectivebrand new; shiny and new
   ピカピカの新製品しんせいひんです。↗

   It's brand new.
3. no-adjective, na-adjectivecleaned (of a plate, etc.); finished

• SynonymテカテカCasualColloquial. An oily sheen on a surface, often with a greasy feel, as in 「顔がテカテカ」; 「ピカピカ」 is the clean, brand-new kind of shine.
• SynonymてらてらCasualColloquial. Light glinting off a smooth surface — an oily sheen or any other slick finish. Less common; everyday speech usually prefers 「テカテカ」.
• Related眩しいまぶしいNeutralNeutral. Glaring light that makes you squint, as in 「太陽が眩しい」; also praises an outstanding person. About the viewer's eyes — it never means brand new.
• Related輝かしいかがやかしいNeutralNeutral. Glorious and brilliant, as in 「輝かしい未来」; used for abstractions like achievements or one's future, not for objects that physically shine.
• RelatedまばゆいWrittenWritten/formal prose. Light so intense you can hardly keep your eyes open, or beauty too dazzling to face; 「ピカピカ」 describes the object itself as shiny.
• Related艶やかつややかWrittenWritten/formal prose. Soft, healthy luster on hair, skin and the like, with an air of beauty; 「ピカピカ」 is about being polished or brand new.
• Related艶々しいつやつやしいWrittenWritten/formal prose. Rich, lustrous sheen with a sense of beauty, but rarely used; it never suggests something new or freshly polished.
• Related金ピカきんピカCasualColloquial. Glittering gold, often with a gaudy feel, as in 「金ピカの装飾」; can also mean brand new, as in 「金ぴかの一年生」. 「ピカピカ」 is more general.
• Related揺らめくゆらめくWrittenWritten/formal prose. A verb for flames or light flickering and swaying, as in 「炎が揺らめく」; it is about movement, not about anything being shiny.
• RelatedキンキラCasualColloquial. Flashily decked out in gold and silver, usually with a negative overtone, as in 「キンキラの衣装」; 「ピカピカ」 fits anything polished or new.
• AntonymボロボロCasualColloquial. Worn out and tattered, or crumbs scattering; the opposite of 「ピカピカ」 when it comes to newness.
• AntonymくすんだNeutralNeutral. Dull and grayish, having lost its luster, as in 「くすんだ色」; the opposite of 「ピカピカ」 in terms of shine.

For a polished, gleaming or brand-new shine, use 「ピカピカ」, as in 「ピカピカの一年生」. Oily sheen calls for 「テカテカ」, glaring light for 「眩しい」, and glorious achievements or futures for 「輝かしい」; for something worn out, say 「ボロボロ」.

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

1. 光り輝ひかりかがやくさま。断続的だんぞくてきに光ひかりを発はっするさま。
2. 真新まあたらしいさま。
3. 綺麗きれいに磨みがかれているさま。
4. 傷きずひとつなく見事みごとなさま。