Compulsatory
Com`pul´sa`to`ry
a. 1. Operating with force; compelling; forcing; constraining; resulting from, or enforced by, compulsion.
To recover of us, by strong hand
And terms compulsatory, those foresaid lands.
And terms compulsatory, those foresaid lands.
- Shak.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.