5. The team's performance was (dismal) in the championship game
6. She felt a sense of (betrayal) when she found out her best friend had been spreading rumors about her
7. The students were (enthralled) by the guest speaker's captivating presentation
8. His constant (complaining) about his job was starting to wear on his coworkers
9. The company's (bankruptcy) was a devastating blow to all of its employees
10. Despite his (arrogance), he was actually quite insecure deep down.