caus·al /'kȯ-zəl/ adj
1: of, relating to, or constituting a cause
causal negligence
2: involving causation or a cause
no causal relationship between driving without insurance and the accident — National Law Journal
a causal link exists between the deceptive act and the injury — National Law Journal
3: arising from a cause
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.