say it: KAW-zuhl
causal is an adjective meaning "involving or constituting a cause; causing". It carries one recorded sense.
involving or constituting a cause; causing
“a causal relationship between scarcity and higher prices”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for causal come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.