Compulsatory
Pronunciation : Com*pul"sa*to*ry
Part of Speech : a.
Definition : Defn: Operating with force; compelling; forcing; constraininig; resulting from, or enforced by, compulsion. [R.] To recover of us, by strong hand And terms compulsatory, those foresaid lands. Shak.
Source : Webster's Unabridged Dictionary, 1913