understandingly

From Middle English undirstondingli, understandandly, equivalent to understanding +‎ -ly.

understandingly (comparative more understandingly, superlative most understandingly)

1. In an understanding manner; with empathy.
2. (obsolete) In a way that can be understood; intelligibly.
   • 1621, Democritus Junior [pseudonym; Robert Burton], The Anatomy of Melancholy, Oxford: Printed by Iohn Lichfield and Iames Short, for Henry Cripps, OCLC 216894069; The Anatomy of Melancholy: […], 2nd corrected and augmented edition, Oxford: Printed by John Lichfield and James Short, for Henry Cripps, 1624, OCLC 54573970, (please specify |partition=1, 2, or 3):

     , vol.I, New York, 2001, p.232:

     Garcias ab Horto writes of one whom he saw at Goa in the East Indies, that took ten drams of opium in three days; and yet consulto loquebatur, spake understandingly […]

• understandably