low-grade

low-grade — adjective

1. falling short of an acceptable standard of quality — used of products, materials

1.adjectiveB2
Definition

falling short of an acceptable standard of quality — used of products, materials, or work that rank below what buyers or inspectors consider satisfactory.

Example

The construction company used low-grade steel beams that began to rust within a year.

collocation: low-grade + material noun (steel, timber, plastic)

Antonia refused to buy low-grade olive oil after learning how much the flavour suffered.

Common collocations
  • low-grade steel
  • low-grade timber
  • low-grade goods
  • low-grade meat
  • low-grade materials
  • low-grade certificate
  • low-grade product
Synonyms
  • inferior

    more formal and often implies a comparison to something better; common in academic or technical writing

  • substandard

    stronger disapproval — suggests the item fails to meet a minimum required level

  • second-rate

    more informal; implies mediocrity and disappointing quality

Antonyms
  • high-grade

    the direct opposite — indicating top-tier quality

  • premium

    suggests superior materials or craftsmanship at a higher price

Grammar Patterns

low-grade + [product/material noun]

Usage Note

Commonly used before nouns for products, materials, or goods to indicate below-average quality. The phrase 'not very good in quality or low in value' captures the core idea — this sense often appears in retail, manufacturing, and construction contexts.

Common Mistakes

He is a low-grade employee.
He is a low-level employee.
low-grade does not describe a person's rank or seniority.
This is a low-grade work.
This is low-grade work.
low-grade is not preceded by an article when used attributively without a following noun to modify (though 'a low-grade piece of work' is fine).

2. at or near the lower end of a scale that measures severity, intensity, or import

2.adjectiveB2
Definition

at or near the lower end of a scale that measures severity, intensity, or importance — describing illnesses, symptoms, pain, criminal offences, or radiation that are relatively mild.

Example

The doctor said a low-grade fever under 38°C was nothing to worry about.

collocation: low-grade fever / temperature

Élise was sent home with a low-grade infection that healed on its own.

Common collocations
  • low-grade fever
  • low-grade infection
  • low-grade inflammation
  • low-grade pain
  • low-grade depression
  • low-grade criminal activity
  • low-grade misconduct
  • low-grade radiation
Synonyms
  • mild

    more common in everyday speech for illnesses and weather; 'mild fever' is less clinical than 'low-grade fever'

  • minor

    used more broadly for problems, injuries, and offences; neutral in register

  • slight

    emphasises a very small degree; common with temperature, pain, and chance

Antonyms
  • high-grade

    used for the opposite end of the severity scale (high-grade fever, high-grade infection)

  • severe

    general antonym indicating much greater seriousness

Grammar Patterns

low-grade + [medical noun / crime noun]

Usage Note

This sense is used when the speaker wants to indicate that something is 'not very severe or important' relative to its full range. Most frequent in medical writing (low-grade fever, low-grade infection, low-grade inflammation) but also appears in legal and social contexts (low-grade crime, low-grade misconduct). Not used in formal legal codes — those prefer 'misdemeanour' or 'summary offence'.

Common Mistakes

She had a low fever, so she stayed home.
She had a low-grade fever, so she stayed home.
the standard medical expression is 'low-grade fever,' not 'low fever.'
He committed a low-grade robbery.
He committed a petty robbery.
for legal categories, 'low-grade' is non-standard; use 'petty' or 'minor' instead.

Word family

  • grade
    nounB1
  • grade
    verbB2
  • grading
    nounB2
  • high-grade
    adjectiveB2
  • low-graded
    adjectiveC1

Synonym discussion

Sense: adjective/1

These four words all describe something below an expected quality level, but they differ in tone and context. Low-grade is the most neutral and factual — it positions something at the bottom of a quality scale without strong disapproval. Inferior is more comparative and formal; it implies that something is worse than another specific thing (e.g., 'this alloy is inferior to stainless steel'). Substandard carries stronger disapproval, suggesting the item fails to meet a required minimum — think of building materials that violate safety codes. Second-rate is informal and subjective, often carrying disappointment: a second-rate hotel might have thin towels and bad lighting but still function. Choose low-grade for objective quality rankings, substandard for regulatory or safety contexts, and second-rate when expressing personal disappointment.

inferior ↗substandardsecond-rate

Common collocations

Adverbs

  • generally low-grade
  • relatively low-grade
  • somewhat low-grade

Phrases

  • of low-grade quality
  • low-grade in nature

Etymology

Old NorseEnglishLatinFrenchEnglish

Formed as a compound adjective from low (descent from Old Norse lágr, 'not high or tall') and grade (from Latin gradus, 'a step, degree, or rank'). The word entered English in the early 1800s, first used to classify products and materials by quality level. By the late 19th century, medical writers had adopted it for conditions of mild severity, such as 'low-grade fever'. The compound structure mirrors similar formations like 'high-grade' and 'first-grade'.