Caus"a*tive (?), a. [L. causativus pertaining to a lawsuit (causa), but in the English sense from E. cause.]
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.
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© Webster 1913.
Caus"a*tive (?), n.
A word which expresses or suggests a cause.
© Webster 1913.