logic
gb/lˈɑd͡ʒɪk/ us/lˈɑd͡ʒɪk/
B1
English
~ 3200
Senses
0 senses
Noun
B1
action
1
Reasoning using sound principles
A way of thinking that uses clear rules to find the right answer.
Usage pattern:
the logic of [something]
Common mistake:
Learners sometimes confuse 'logic' with 'logistics'; 'logic' is about reasoning, while 'logistics' is about managing operations or transport.
Synonyms
reasoning (Emphasizes the process of thinking rather than the formal rules.)
|
rationality (Focuses on being reasonable and sensible, sometimes with moral overtones.)
Antonyms
illogic (The absence or violation of logical thinking.)
|
irrationality (Thinking or behavior not based on reason or logic.)
Collocations
sound logic
|formal logic
|follow the logic
|logic and reason
|apply logic
Themes
thinking
|science
|philosophy
|education
|core_vocabulary
Examples
- Her argument was based on solid logic.
- If you follow the logic, you'll understand the solution.
- The detective used logic to solve the case.
- Logic tells us that water will boil at 100°C at sea level.
Learner examples
- He used logic to find the answer.
- I do not see the logic in your idea.
- Logic can help you make good choices.
- She followed the logic to solve the problem.
Noun
technical
B2
entity
2
Formal system of reasoning rules
The study of rules for correct thinking, often in math or philosophy.
Synonyms
formal logic (Specifically refers to structured systems for reasoning.)
Collocations
symbolic logic
|mathematical logic
|Boolean logic
|propositional logic
Themes
philosophy
|mathematics
|science
|education
|core_vocabulary
Examples
- He is taking a course in symbolic logic.
- Boolean logic is essential in computer programming.
- Mathematical logic underpins many algorithms.
Learner examples
- I study logic in my math class.
- Logic is important in computer science.
- We learn about rules of logic in philosophy.
Noun
B1
entity
3
Reasoning for a decision or action
The reason why someone does something or thinks something is true.
Usage pattern:
the logic behind [something]
Synonyms
rationale (A formal explanation for a decision or belief.)
Collocations
the logic behind it
|flawed logic
|twisted logic
Themes
thinking
|daily life
|communication
|business
|core_vocabulary
Examples
- I don't understand the logic behind his plan.
- There is no logic to spending so much money on this project.
- Her logic for quitting was clear after she explained.
Learner examples
- I do not see the logic in your choice.
- The logic behind his move is not clear.
- She explained the logic of her plan.
Grammar
Dictionary form
logic
IPA
GB/lˈɑd͡ʒɪk/
US/lˈɑd͡ʒɪk/
Syllables & stress
lo - gic (2 syllables)
Stress on 1st syllable (lo)
Word forms
Noun
- Base: logic
- Plural: logic, logics
Word family
Expressions
flawed logic
1/flˈɔd lˈɑd͡ʒɪk/
fixed phrase
Reasoning containing mistakes
Thinking that has mistakes or does not make sense.
Examples
- His argument is based on flawed logic.
- Flawed logic can lead to bad decisions.
follow the logic
1/fˈɑloʊ ðə lˈɑd͡ʒɪk/
fixed phrase
Understand reasoning step by step
To see how each step in an idea or argument leads to the next.
Examples
- If you follow the logic, you'll see why he made that choice.
- Follow the logic and you'll find the answer.
twisted logic
1/twˈɪstɪd lˈɑd͡ʒɪk/
fixed phrase
Distorted reasoning to fit bias
Thinking that changes facts or rules to make something seem right when it is not.
Examples
- With twisted logic, he made himself look like the victim.
- Twisted logic can be dangerous in politics.