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Word

logic

noun C1
/ˈlɒd͡ʒ.ɪk/

Meanings

noun

clear, reasonable thinking used to evaluate ideas or arguments

logic: clear, reasonable thinking used to evaluate ideas or arguments
noun

a system of principles or rules that explains how something works or should be done

logic: a system of principles or rules that explains how something works or should be done
noun

the academic field that studies valid reasoning, including formal argument structures

logic: the academic field that studies valid reasoning, including formal argument structures

Definition

Logic is the use of clear, consistent reasoning to judge whether an idea or argument makes sense.

Logic is a way of thinking that follows consistent rules so conclusions follow from evidence or premises. People use logic to test arguments, spot contradictions, and make decisions more rationally. In academics, it also refers to the formal study of valid reasoning, often using symbols and structured proofs.

Examples

  • I can follow your conclusion, but your logic collapses when the key assumption changes.
  • She challenged the proposal’s logic by asking what would happen in the worst-case scenario.
  • They admired the logic of the design because every feature had a clear purpose.
  • You may disagree with the outcome, yet the logic behind the decision is internally consistent.
  • His logic was persuasive, so the committee accepted the recommendation after a brief debate.

Common mistake

Learners often say "make logic" instead of the more natural "use logic" or "apply logic."

More at C1 level

More nouns