temerity: [tuh-mer-i-tee] (n) reckless audacity; overconfidence
in a sentence: Instead of asking for a fair raise, Miller had the temerity to demand his boss’ job … from the boss herself. We’ll miss Miller.
caution: [kah-shun] (n) care taken to avoid danger or mistakes
in a sentence: Eric wanted to ride his bike to his friend’s house by himself. He had his helmet, lights, reflective vest, and promised to exercise caution on the road. His parents were nervous, but at 23 years old, they knew they he was ready.