上質|じょうしつjoushitsu[0]heiban (flat)

1. na-adjective, no-adjectivefine quality
   あのシャツを着きてみなさい。上質じょうしつの綿わたでできています。↗

   Try on that shirt. It's made of fine cotton.

• Synonym高級こうきゅうNeutralRefers to high class or grade and often implies a high price or luxury; 「上質」 just says the quality is good — of goods or services — not necessarily expensive.
• Synonym高品質こうひんしつNeutralFocuses on the high quality of products and materials, common in advertising and product descriptions; close to 「上質」 but more of a technical assessment.
• Synonym極上ごくじょうNeutralMeans the very best, top grade — a stronger degree than 「上質」 — and is used mostly for food, drink and service.
• Synonym上等じょうとうNeutralMeans high in grade and quality, much like 「上質」; in speech 「上等だ」 can also be a defiant 'bring it on'.
• SynonymとびきりCasualColloquial: exceptionally good, the best of its kind; also an adverb meaning 'exceptionally'. Stronger than 「上質」.
• SynonymハイクオリティNeutralLoanword for high quality, used in advertising and design; trendier than 「上質」.
• SynonymハイクラスNeutralLoanword for high class, stressing rank and status; 「上質」 is about the quality of the material itself.
• Synonym高品位こうひんいWrittenFormal: high in quality or grade, and also high picture resolution, as in 「高品位映像」; found mainly in technical descriptions.
• Related卓越たくえつWrittenFormal: far surpassing others of its kind — of talent, or of quality and performance, as in 「卓越した品質」; stronger than 「上質」.
• Related秀逸しゅういつWrittenFormal: exceptionally fine — of works, ideas or materials, as in 「秀逸なデザイン」; a stronger, more evaluative word than 「上質」.
• Related出色しゅっしょくWrittenFormal: standing out among many; mostly about performance or results, but also 「出色の品質」; stresses being outstanding more than 「上質」.
• Related卓抜たくばつWrittenFormal: preeminent — of ability and insight, or of works and designs, as in 「卓抜なデザイン」; 「上質」 is about fine material quality.
• Related至高しこうWrittenFormal: supreme, second to none, as in 「至高の味」; very strong and often hyperbolic, while 「上質」 simply means good quality.
• Related出群しゅつぐんWrittenFormal: far above the crowd; everyday speech uses 「抜群」 instead. For ability and results, not the quality of goods.
• Related絶倫ぜつりんWrittenFormal: matchless ability; today mostly seen in 「精力絶倫」. Not used for the quality of products.
• Related卓出たくしゅつWrittenFormal and rare today: outstanding talent; in everyday speech say 「優れている」 or 「抜群」.
• Related秀抜しゅうばつWrittenFormal: exceptional talent or works; about ability, not the quality of materials.
• Related超凡ちょうぼんWrittenFormal: extraordinary, beyond the ordinary; said of people's abilities, not the quality of goods.
• Related特出とくしゅつWrittenFormal: especially prominent, synonymous with 「傑出」; for people and achievements, not material quality.
• Related秀しゅうNeutralUsed in grading, the top mark in scales like 「秀・優・良・可」; not normally used alone for the quality of goods.
• Related精良せいりょうWrittenFormal: finely made and superior — mostly equipment and products; in daily speech use 「上質」 or 「高品質」.
• Antonym粗悪そあくNeutralAntonym: crude and shoddy in make, as in 「粗悪品」; the opposite of the good quality 「上質」 describes.
• Antonym低質NeutralAntonym: low in quality; the direct opposite of 「上質」, though rarely used on its own.

Use 「上質」 for fine material and workmanship — of goods or services, with no hint of price. Pick 「高級」 to stress class and cost, 「極上」 for the very finest (food, drink, service), and 「卓越」 or 「秀逸」 for outstanding talent or work. 「高品質」 fits product specs and ads, 「上等」 is a near equivalent, and the loanword 「ハイクオリティ」 is a trendier choice for marketing and design. Rarer formal words such as 「卓抜」, 「至高」 and 「精良」 praise ability or fine making in written prose; 「粗悪」 and 「低質」 are the antonyms for poor quality.

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

1. 品質ひんしつが上等じょうとうであること。
2. 品質ひんしつが上等じょうとうであるさま。