REASONABLY

reasonably, moderately, pretty, jolly, somewhat, fairly, middling, passably

(adverb) to certain extent or degree; “pretty big”; “pretty bad”; “jolly decent of him”; “the shoes are priced reasonably”; “he is fairly clever with computers”

sanely, sensibly, reasonably

(adverb) with good sense or in a reasonable or intelligent manner; “he acted sensibly in the crisis”; “speak more sanely about these affairs”; “acted quite reasonably”

Source: WordNet® 3.1

Etymology

Adverb

reasonably (comparative more reasonably, superlative most reasonably)

In accordance with reason.

Fairly; satisfactorily; not extremely.

Quite; fairly; satisfactorily.

Source: Wiktionary

Rea"son*a*bly, adv.

1. In a reasonable manner.

2. Moderately; tolerably. "Reasonably perfect in the language." Holder.

REASONABLE

Rea"son*a*ble, a. Etym: [OE. resonable, F. raisonnable, fr. L. rationabilis. See Reason, n.]

1. Having the faculty of reason; endued with reason; rational; as, a reasonable being.

2. Governed by reason; being under influence of reason; thinking, speaking or acting rationally, or according to the dictates of reason; agreeable to reason; just; rational; as, the measure must satisfy all reasonable men. By indubitable certainty, I mean that which doth not admit of any reasonable cause of doubting. Bp. Wilkins. Men have no right to what is not reasonable. Burke.

3. Not excessive or immoderate; within due limits; proper; as, a reasonable demand, amount, price. Let . . . all things be thought upon That may, with reasonable swiftness, add More feathers to you wings. Shak.

Syn.

– Rational; just; honest; equitable; fair; suitable; moderate; tolerable. See Rational.

Rea"son*a*ble, adv.

Definition: Reasonable; tolerably. [Obs.] I have a reasonable good ear in music. Shak.

Source: Webster’s Unabridged Dictionary 1913 Edition