The Collaborative International Dictionary
Unwontedness
Unwonted \Un*wont"ed\ ([u^]n*w[u^]nt"[e^]d), a.
Not wonted; unaccustomed; unused; not made familiar by practice; as, a child unwonted to strangers.
--Milton.Uncommon; unusual; infrequent; rare; as, unwonted changes. ``Unwonted lights.''
--Byron. [1913 Webster] -- Un*wont"ed*ly, adv. -- Un*wont"ed*ness, n.
Wiktionary
unwontedness
n. The quality of of being unwonted or unusual; deviation from custom or habit.
Usage examples of "unwontedness".
Apparently she had no feminine sensation of the unwontedness and the absurdity of the matter!
For a moment, he seemed to lose the sense of space and time, even of the unwontedness of scene and situation.