say it: KAW-shuh-ner-ee
cautionary is an adjective meaning "warding off". It carries 2 recorded senses.
warding off
“the swastika...a very ancient prophylactic symbol occurring among all peoples”
serving to warn
“shook a monitory finger at him”
“an exemplary jail sentence”
Definitions, synonyms and semantic relations for cautionary 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.