Causal is a term used to describe something that is related to the cause or origin of an event. Some synonyms for causal include causalistic, originative, causational, and causative. These words all convey the idea that something is responsible for bringing about a certain effect. Another possible synonym for causal is consequential, which suggests that a certain action or event will have a specific consequence. Some other synonyms that can be used in place of causal include influencing, prompting, generating, spurring, and instigating. Overall, these words all relate to the idea of cause and effect, and can be useful in a variety of contexts where causality is a key concern.