cautious

• "whitewater rafting is not for the timid"

Synonyms

• timidpeople who are fearful and cautious; showing fear and lack of confidence ; lacking self-confidence; lacking conviction or boldness or courage

• "reserved and cautious"
• "never making swift decisions"
• "a cautious driver"

• "a conservative estimate"

Synonyms

• conservativea person who is reluctant to accept changes and new ideas ; a member of a Conservative Party ; resistant to change, particularly in relation to politics or religion ; having social or political views favoring conservatism ; avoiding excess; unimaginatively conventional; conforming to the standards and conventions of the middle class