DICT.TW Dictionary Taiwan

 com·pul·so·ry /kəmˈpʌlsri, ˈpʌlsə-/
 (a.)強迫的,強制性的,義務的

 Com·pul·so·ry a.
 1. Having the power of compulsion; constraining.
 2. Obligatory; enjoined by authority; necessary; due to compulsion.
    This contribution threatening to fall infinitely short of their hopes, they soon made it compulsory.   --Burke.
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 compulsory
      adj : required by rule; "in most schools physical education are
            compulsory"; "attendance is mandatory"; "required
            reading" [syn: mandatory, required]