Definitions
01clear reasoning
B2 · Upper Intermediate Uncountable noun
n. a way of thinking about something that is sensible and based on good reasons.
n. the quality of being justifiable by reason; sound, clear, and sensible thinking.
日本語:論理※
“There is no logic in spending all your money before you pay your rent.”
“The logic behind the government's decision to raise taxes during a recession was questioned by several prominent economists.”
Synonyms
Antonyms
02the study of reasoning
C1 · Advanced Uncountable noun Philosophy Academic
n. the formal study of the rules of reasoning and how to make a valid argument.
n. the branch of philosophy and mathematics that deals with the formal principles of valid inference and demonstration.
“In my first year at university, I took a course on formal logic.”
“Aristotelian logic remained the dominant framework for deductive reasoning in the Western world for over two millennia.”
03a specific system
B2 · Upper Intermediate Countable noun
n. a particular set of rules or ideas used to solve a problem or explain a situation.
n. a specific system of reasoning or a set of principles underlying a particular field or practice.
“I don't understand the logic of this computer program's layout.”
“To understand the cultural conflict, one must first grasp the internal logic of each group's belief system.”
04electronics
C1 · Advanced Uncountable noun Computing Technical
n. the electronic circuits in a computer that perform basic tasks using 'true' or 'false' signals.
n. the physical arrangement of circuits or gates in a computer or digital system that performs Boolean operations.
“The technician found a fault in the control logic of the motherboard.”
“Modern processors integrate billions of transistors to execute complex logic operations at incredible speeds.”
Synonyms
05to reason through
C2 · Proficiency Formal
v. to use careful thinking to solve a problem or understand a situation.
v. to apply logical reasoning to a problem or to persuade someone using a logical argument.
“We need to logic out the best way to finish the project on time.”
“The detective attempted to logic his way through the suspect's contradictory statements to find the truth.”
Usage
Often used with 'out' as in 'to logic something out'.
Synonyms
Collocations
Common phrases and expressions where native English speakers use the word “logic” in context.
Verb
01. apply logic to the problem
“If you apply logic to the problem instead of reacting emotionally, the solution becomes clear.”
verb + noun + prep + noun
02. defy logic
“The athlete's sudden recovery seemed to defy logic, given the severity of his injury.”
verb + noun
03. follow the logic
“I can follow the logic of your argument, but I still disagree with your final conclusion.”
verb + noun
Adjective
04. circular logic
“The politician's statement was a classic example of circular logic, where the conclusion was used to prove the premise.”
adj + noun
05. flawed logic
“The committee rejected the proposal because it was based on fundamentally flawed logic.”
adj + noun
06. impeccable logic
“Her presentation was delivered with such impeccable logic that no one could find a reason to object.”
adj + noun
Noun
07. logic behind the decision
“The CEO explained the logic behind the decision to close the regional branch.”
noun + prep + noun
08. piece of logic
“That is a brilliant piece of logic that simplifies a very complex situation.”
noun + of + noun
Real-World Examples
“The couple’s trajectory had “its own weird logic, although it wouldn’t be anyone else’s.” “Four!"
Guardiola, of 10 years ago, perfectly describes the logic and strategy behind Maresca's current system, and one that still works.” Etymology
From Middle English logike, from Old French and Latin logicus, from Ancient Greek λογῐκός (logĭkós).
From Middle English logik, from Old French logike, from Latin logica, from Ancient Greek λογική (logikḗ, “logic”), from feminine of λογικός (logikós, “of or pertaining to speech or reason or reasoning, rational, reasonable”), from λόγος (lógos, “speech, reason”). Displaced native Old English flitcræft (literally “art of arguing”).
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.
Related words
Domains
- Exam level
- CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.C1 AdvancedIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.7.0–8.0TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 5.0–5.595–113TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.945–990
- Frequency
- Common
- Level
- C1 · AdvancedOxford
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