Noah Webster
Unengaged
UNENGA'GED, adjective
1. Not engaged; not bound by covenant or promise; free from obligation to a particular person; as, a lady is unengaged
2. Free from attachment that binds; as, her affections are unengaged
3. Unemployed; unoccupied; not busy.
4. Not appropriated; as unengaged revenues. [We generally say, unappropriated revenue or money.]