Emily Dickinson Lexicon

REAS-ON-A-BLE, a.

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. – Wilkins. A law may be reasonable in itself, though a man does not allow it. – Swift.
4. Not immoderate. Let all things be thought upon, / That may with reasonable swiftness add / More feathers to our wings. – Shak.
5. Tolerable; being in mediocrity; Moderate; a reasonable quantity. – Abbot.
6. Not excessive; not unjust; as, a reasonable fine; a reasonable sum in damages.