late 14c. as "indivisible, incapable of being parted," from Medieval Latin impartibilis; see im- "not, opposite of" + part (v.). From 1630s as "capable of being imparted," from impart (v.) + -ible. Now little used in either sense.
impanel
imparity
impart
impartial
impartiality
impartible
impassable
impasse
impassible
impassion
impassionate