say it: KAW-shuhs
cautious is an adjective and noun meaning "showing careful forethought". It carries 3 recorded senses.
showing careful forethought
“reserved and cautious; never making swift decisions”
“a cautious driver”
avoiding excess
“a conservative estimate”
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 cautious 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.