資料來源 : Webster's Revised Unabridged Dictionary (1913)

Compulsatory \Com*pul"sa*to*ry\, a.
   Operating with force; compelling; forcing; constraining;
   resulting from, or enforced by, compulsion. [R.]

         To recover of us, by strong hand And terms
         compulsatory, those foresaid lands.      --Shak.