Unaccustomed
From BiblePortal Wikipedia
King James Dictionary [1]
1. Not accustomed not used not made familiar not habituated as a bullock unaccustomed to the yoke. Jeremiah 31 . 2. New not usual not made familiar as unaccustomed air unaccustomed ideas.
Webster's Dictionary [2]
(1): ( a.) Not used; not habituated; unfamiliar; unused; - which to.
(2): ( a.) Not usual; uncommon; strange; new.
Wilson's Dictionary of Bible Types [3]
Jeremiah 31:18 (a) This is a splendid picture of the sinner in his natural state. He does not submit to authority, he is unbroken, unruly, and in rebellion against God, and His laws.