* Timid: This is a direct opposite of audacious, meaning lacking courage or confidence.
* Cautious: This suggests carefulness and hesitation, the opposite of boldness.
* Cowardly: This implies a lack of courage in the face of danger or difficulty.
* Meek: This implies being gentle and submissive, the opposite of assertive.
* Hesitant: This means being unsure or reluctant to act, the opposite of being decisive.
* Conservative: This can imply a reluctance to take risks or embrace change, the opposite of being daring.
The best antonym for "audacious" will depend on the specific situation and the nuance you want to convey.