boast - 자랑하다. ex)I hate him. He's always boasting how clever and successful he is. generalisation - 일반화 ex)You can't make sweeping generalisation about French people if you've only been there for a day. stumble - (발이) 걸리다. ex)I stumbled on the stairs but didn't fall down. sphere - 구 ex)The earth is a sphere in terms of shape. despair - 절망 ex)He felt utter despair when he realised there is no hop..