The antonyms for the word "more overventuresome" are words that imply caution, timidity, or prudence. Some antonyms for "overventuresome" might include words like cautious, unadventurous, timid, or safe. Those who are cautious tend to go about things in a careful and deliberate manner, making sure to avoid any potential risks or dangers. Those who are unadventurous tend to shy away from new experiences or challenges, preferring to stay within their comfort zone. Those who are timid are often hesitant to take risks, preferring to play it safe and avoid confrontations or challenges. Finally, those who are safe prioritize security and stability over taking unnecessary risks.