Meaning & use
abstract idea
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Meanings
nouncountable
A thought or concept that exists only in the mind and has no physical form.
Grammar: Countable: you can say 'an abstract idea' or 'abstract ideas'.
Patterns
- an abstract idea
- abstract ideas about something
- the abstract idea of something
Justice is an abstract idea that people understand differently.
The teacher asked us to discuss abstract ideas like love and freedom.
He finds it hard to talk about abstract ideas without examples.
nouncountable
A general plan or thought that is not connected to a real situation.
Grammar: Often used in the phrase 'in the abstract', meaning in general, not in a real case.
Patterns
- in the abstract
- an abstract idea of something
In the abstract, the idea of working from home sounds perfect, but it can be lonely.
The proposal was just an abstract idea; nobody had thought about the cost.
She prefers concrete plans to abstract ideas.
Word forms
| plural | abstract ideas |
|---|
Common combinations
- abstract idea
- The concept of time is an abstract idea.
- abstract concept
- Freedom is an abstract concept that is hard to define.
- abstract thinking
- Children develop abstract thinking as they grow.
- in the abstract
- In the abstract, the plan seems fine, but in practice it may fail.
Synonyms and how they differ
- concept
- A more general word for any idea, whether abstract or not; 'abstract idea' specifically emphasizes that it has no physical form.
- notion
- Often suggests a vague or imperfect idea; 'abstract idea' is neutral about clarity.
- theory
- A systematic set of ideas, often in science; 'abstract idea' is broader and less formal.
Opposites
Word family
- abstract adjective
- Existing as an idea, not a physical thing.
- abstraction noun
- A general idea not based on a specific example.
- abstractly adverb
- In a way that relates to ideas rather than physical things.
Commonly confused: abstract idea or abstract?
abstract idea vs abstract
As a noun, 'abstract' means a short summary of a paper. 'Abstract idea' is a concept, not a summary.
Practice
Which sentence uses 'abstract idea' correctly?
Choose one answer.
Option 3 is correct because 'abstract idea' refers to a concept without physical form. Option 1 uses 'abstract' as a noun meaning a summary. Option 2 confuses 'abstract' (summary) with 'abstract idea'. Option 4 is wrong because a drawing is physical, not abstract.
Make it your own
Write a sentence using “abstract idea”, then check it and compare it with the examples above.