logic

Definitions

The branch of philosophy that treats the forms of thinking in general and the rules of valid reasoning.

A system or set of principles underlying the arrangements of elements in a computer or electronic device.

Reasoned or sensible judgment based on evidence or established facts.

Examples

Her argument was based on sound logic and clear evidence.

There is no logic in spending all your money on things you do not need.

Synonyms

reasoning rationality sense intellect argumentation deduction wisdom

Antonyms

irrationality illogic absurdity nonsense folly unreason confusion