Definition

1. Adjective:
   • Of superior quality or excellence: Used to describe something that is of the best or highest standard within its category.
   • Of a high rank or class: Indicates a superior level in a grading or classification system.

Usage

• The adjective "high-grade" is used attributively before a noun to modify it. It describes the superior nature of the noun it precedes.
• It is a compound adjective, typically hyphenated.

Examples

• Attributive use:
  • The jeweler only sells high-grade diamonds with excellent clarity.
  • The factory upgraded its machinery to produce high-grade steel.
  • Patients should seek treatment from a high-grade medical facility.

Advanced Usage

• In economic/industrial contexts: Often used to describe raw materials, manufactured goods, or services that meet exceptional standards.
  • The country is known for exporting high-grade agricultural products.
• In medical contexts: Can describe a serious condition or tumor (e.g., a high-grade fever, a high-grade tumor), implying a severe or advanced state. This is a specialized use where "high-grade" indicates a high level of severity or malignancy.

Variants and Related Words

• Top-grade (adj): Essentially synonymous with "high-grade," meaning of the highest quality.
• Superior (adj): Of higher quality or greater importance. (A more general synonym).
• Premium (adj): Of exceptional quality or higher than standard. Often implies a higher cost.
• First-rate (adj): Of the best class or quality; excellent.

Synonyms

• Superior
• Excellent
• Top-quality
• Choice
• Prime

Antonyms

• Low-grade
• Inferior
• Poor-quality
• Substandard

Notes

• "High-grade" is the target compound adjective. Related terms like "high quality" (a noun phrase) or "highly graded" (a verbal construction) are distinct and not the target of this entry.
• In some technical fields (e.g., geology, medicine), "high-grade" has specific, standardized meanings related to classification systems.

Adjective

1. surpassing in quality
   • top-grade ore