reasoning from general rules to specific cases

deductive

adjective|/dɪˈdʌk.tɪv/

Relating to reasoning from general principles to specific conclusions; logically conclusive

Examples

In a meeting

Using deductive reasoning, we can conclude that this trend will affect all regional offices.

Over coffee

It's basic deductive logic: if all birds have feathers, and this is a bird, it has feathers.

Why this word

logical

deductive specifies reasoning from general principles to specific conclusions, while logical is broader about any sound reasoning

rational

deductive describes a specific method of inference from premises to conclusion, while rational just means based on reason

analytical

deductive refers to top-down logical inference, while analytical broadly means breaking down and examining components

Usage tip

Use to describe top-down logical reasoning; contrasts with inductive (bottom-up) reasoning

Etymology

Latin: deductivus, from deducere (to lead down), from de- (down) + ducere (to lead)

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