knowledge
C1 (Very High)Neutral (Used across all registers from formal to informal)
Definition
Meaning
Awareness, facts, information, and skills acquired through experience or education; the theoretical or practical understanding of a subject.
The sum of what is known within a particular field or by humanity collectively; also implies familiarity gained by experience.
Linguistics
Semantic Notes
Primarily an uncountable noun, but countable in the specific sense of 'a particular branch of knowledge' (e.g., 'local knowledge'). The verb form 'to knowledge' is rare and archaic.
Dialectal Variation
British vs American Usage
Differences
Very little difference in usage or meaning. Spelling is identical. Potential minor difference in certain collocations like 'general knowledge' (common in both) and the historical phrase 'to my knowledge' being equally prevalent.
Connotations
Identical core connotations of understanding and information.
Frequency
Exceptionally high frequency in both varieties, with virtually identical usage patterns.
Vocabulary
Collocations
Grammar
Valency Patterns
[uncountable] knowledge of/about something[countable, usually singular] a knowledge of something[uncountable] to sb's knowledge[uncountable] without sb's knowledgeVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “to the best of my knowledge”
- “a little knowledge is a dangerous thing”
- “common knowledge”
- “in the full knowledge of”
- “know something inside out”
- “bring to the knowledge of”
Usage
Context Usage
Business
Refers to internal expertise, market understanding, intellectual capital, or 'knowledge management' systems.
Academic
Central term for the pursuit, creation, and dissemination of understanding in any discipline (e.g., 'theory of knowledge').
Everyday
Used to talk about what someone knows (e.g., 'Do you have any knowledge of first aid?').
Technical
In computing/IT, used in 'knowledge base', 'knowledge graph', or 'expert system'.
Examples
By Part of Speech
verb
British English
- The act was knowledge to the court, but the archaic usage is virtually never heard.
American English
- (Archaic/Rare) The attorney did knowledge the document, but modern usage is 'acknowledge'.
adverb
British English
- (Standard adverbial form does not exist. Use 'knowledgeably'.)
American English
- (Standard adverbial form does not exist. Use 'knowledgeably'.)
adjective
British English
- Knowledge-based industries are key to the economy.
- She's a very knowledge person (informal/colloquial).
American English
- He works in a knowledge-intensive sector.
- They have a knowledge-driven culture (formal).
Examples
By CEFR Level
- He has good knowledge of football.
- I don't have any knowledge about cooking.
- She shared her knowledge with the class.
- The training will give you practical knowledge of the software.
- To my knowledge, the meeting hasn't been cancelled.
- His knowledge of local history is impressive.
- The engineer applied her technical knowledge to solve the complex problem.
- Without prior knowledge of the client's needs, we cannot proceed.
- Advances in medical knowledge have saved countless lives.
- The philosopher's treatise explored the very nature of knowledge and belief.
- Her in-depth knowledge of contract law proved invaluable during the negotiations.
- The committee acted in the full knowledge that their decision would be controversial.
Learning
Memory Aids
Mnemonic
KNOWLEDGE = 'Know' + 'ledge'. Think of knowledge as the solid 'ledge' or foundation you stand on built from what you 'know'.
Conceptual Metaphor
KNOWLEDGE IS A POSSESSION ('acquire knowledge', 'store of knowledge'); KNOWLEDGE IS A CONTAINER ('body of knowledge'); KNOWLEDGE IS A JOURNEY ('pursuit of knowledge', 'advances in knowledge'); KNOWLEDGE IS LIGHT/SIGHT ('enlightenment', 'insight').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid directly translating 'knowledge' as 'знание' in the plural. English 'knowledge' is usually uncountable (e.g., 'She has a lot of knowledge', not 'knowledges').
- Do not confuse with 'знания' in the sense of 'grades/marks' in school. 'Academic knowledge' is the correct term for scholarly understanding.
Common Mistakes
- Using 'knowledge' as a plural countable noun (e.g., 'He knows many knowledges').
- Misspelling: 'knowlege', 'knoledge'.
- Confusing 'knowledge' with 'information'. Knowledge implies processed and understood information.
Practice
Quiz
Which of the following sentences uses 'knowledge' CORRECTLY?
FAQ
Frequently Asked Questions
'Knowledge' is primarily an uncountable noun. We say 'a lot of knowledge', not 'many knowledges'. It can be countable in specific contexts, like referring to a specific branch: 'the different knowledges of indigenous cultures' (this is a formal/specialist usage).
'Information' is raw, unprocessed data (facts, numbers, details). 'Knowledge' is information that has been processed, understood, contextualized, and internalized by a person. You can have information without understanding it, but knowledge implies comprehension and the ability to use that understanding.
Yes, 'knowledgeable' is the standard adjective (e.g., a knowledgeable expert). The use of 'knowledge' as an adjective (e.g., 'knowledge worker') is a modern compound modifier, not a standalone adjective.
'To my knowledge' is used to state that you believe something is true based on what you know, but you are not 100% certain. It is a polite way to indicate limited awareness. Example: 'To my knowledge, the report was submitted last week.'
Collections
Part of a collection
Education
A2 · 50 words · School, studying and learning vocabulary.
Philosophy and Ethics
C1 · 50 words · Philosophical concepts and ethical reasoning.