Emily Dickinson Lexicon

A-GREE'A-BLY, adv.

1. Pleasingly; in an agreeable manner; in a manner to give pleasure; as, to be agreeably entertained with a discourse.
2. Suitably; consistently; conformably. The effect of which is, that marriages grow less frequent, agreeably to the maxim above laid down. – Paley. This is a gross error, proceeding from mistake. Agreeably signifies, in an agreeable manner; but this is not the sense, nor does the word modify the verb grow. The sense is, Marriages grow less frequent, which (fact, or whole member of the sentence, or proposition) is agreeable to the maxim above laid down. This use of agreeably is common but very erroneous.
3. Alike; in the same manner. Both armed agreeably. [Obs.] Spenser.