unproper

1. (obsolete) Improper, not according with fact or reason; wrong, irregular.Examples: "Sir, as I said last time, labour to keep your alacrity and dignity, in an even temper: for in a dark sadness, indifferent things seem abominable, or necessary, being neither; as trees, and sheep, to melancholy night-walkers, have unproper shapes."obsolete

2. (now rare) Improper, not suited for its use or application; inappropriate.Examples: "The pleasure in the act of Venus is the greatest of the pleasures of the senses: the matching of it with itch is unproper; though that also be pleasing to the touch."; "Transparency is paramount. If football’s guardians cannot deliver it they will, rightly, be deemed to be every bit as unfit and unproper to play a role in administering the sport as any secretive investor they may feel motivated to investigate."archaic

3. (obsolete) Not belonging to a given person; someone else's.Examples: "There's Millions now aliue, That nightly lye in those vnproper beds, Which they dare sweare peculiar."obsolete

4. (rare) Improper, not according with good standards of behaviour; indecent, indecorous.Examples: "His equally unproper brother, City Planner Charles W. II, shocked purists in the 19303 by building a flat-topped house in Ipswich."rare