American Dictionary of the English Language

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RE'ASONABLE, adjective

1. Having the faculty of reason; endued with reason; as a reasonable being. [In this sense, rational is now generally used.]

2. Governed by reason; being under the influence of reason; thinking, speaking or acting rationally or according to the dictates of reason; as, the measure must satisfy all reasonable men.

3. Conformable or agreeable to reason; just; rational.

By indubitable certainty, I mean that which does not admit of any reasonable cause of doubting.

A law may be reasonable in itself, though a man does not allow it.

4. Not immoderate.

Let all things be thought upon, that may with reasonable swiftness add more feathers to our wings.

5. Tolerable; being in mediocrity; moderate; as a reasonable quantity.

6. Not excessive; not unjust; as a reasonable fine; a reasonable sum in damages.