caus·a·tive /ˈkɔzətɪv/
  (a.)成為原因的使役詞
  Caus·a·tive a.
  1. Effective, as a cause or agent; causing.
     Causative in nature of a number of effects.   --Bacon.
  2. Expressing a cause or reason; causal; as, the ablative is a causative case.
  Caus·a·tive n. A word which expresses or suggests a cause.
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  causative
       adj : producing an effect; "poverty as a causative factor in
             crime" [ant: noncausative]