say it: pri-KAW-shuh-neh-ree
precautionary is an adjective meaning "taken in advance to protect against possible danger or failure". It carries one recorded sense.
taken in advance to protect against possible danger or failure
“gave precautionary advice”
“I would take precautionary steps to keep him away”
Definitions, synonyms and semantic relations for precautionary 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.