adj .
cheerful ; optimistic ; hopeful 쾌활한 ; 낙천적인 ; 희망에 차 있는

• Peter was _____ about his chances of winning the Nobel Peace Prize, even though, as an eighth grader, he hadn't really done anything to deserve it.
• The ebullient checkers champion remained _____ in defeat ; he was so sure of himself that he viewed even catastrophe as merely a temporary setback.
  성격이 활달한 챔피언은 체커 경기에 패하고도 여전히 쾌활했다 ; 그는 워낙 자신감에 넘쳐서 참패조차도 그저 일시적인 후퇴로 여겼다.
• Don't confuse _____ (a nice word) with sanguinary (not a nice word). Sanguinary means bloodthirsty.