General synonyms:
* Prudent: implies sound judgment and careful planning.
* Circumspect: suggests careful consideration of all angles and potential consequences.
* Wary: implies a sense of suspicion or apprehension.
* Hesitant: indicates a reluctance to act quickly or decisively.
* Discreet: implies tactfulness and avoiding unnecessary risk.
* Conservative: suggests a preference for tradition and avoiding change.
More specific synonyms:
* Chary: implies a strong reluctance or unwillingness to do something.
* Timid: suggests a lack of confidence or courage.
* Apprehensive: expresses a feeling of worry or anxiety about potential danger.
* Leery: implies a strong distrust or suspicion of something.
Informal synonyms:
* Careful: a simple and straightforward synonym.
* On edge: suggests a heightened state of alertness or anxiety.
* Playing it safe: implies avoiding risk and potential harm.
The best synonym for "cautious" will depend on the specific context in which you are using the word.