|Noah Webster's Dictionary|
(adv.) In a charitable manner.
Int. Standard Bible Encyclopedia
char'-i-ta-bli (kata agapen): The Revised Version (British and American), which substitutes "love" for "charity" regularly, removing the latter word from the vocabulary of Scripture, makes a like change in Romans 14:15, the only occurrence of "charitably" in the King James Version; the Revised Version (British and American) "in love."
Charitably (1 Occurrence)
Romans 14:15 But if thy brother be grieved with thy meat, now walkest thou not charitably. Destroy not him with thy meat, for whom Christ died. (KJV WBS)