These are all informal words that describe sb/sth that is very good, pleasant, enjoyable, etc.以上各词均为非正式用语，表示美妙的、使人快乐的、令人愉快的等。
great(informal) very good; giving a lot of pleasure指美妙的、好极的、使人快乐的：◆We had a great time in Madrid.我们在马德里玩得很开心。
cool(informal) used to show that you admire or approve of sth, often because it is fashionable, attractive or different指因时髦、漂亮或与众不同而令人钦佩的、绝妙的、顶呱呱的：◆I think their new song's really cool.我认为他们的新歌棒极了。
fantastic(informal) extremely good; giving a lot of pleasure指极好的、了不起的、非常愉快的：◆'How was your holiday?' 'Fantastic!'“你假期过得好吗？” “棒极了！”
fabulous(informal) extremely good指极好的、绝妙的：◆Jane's a fabulous cook.简的烹饪技巧堪称一绝。Fabulous is slightly more old-fashioned than the other words in this set. * fabulous 较这组词中的其他词稍显过时。
terrific(informal) extremely good; wonderful指极好的、绝妙的、了不起的：◆She's doing a terrific job.她活儿干得真棒。
brilliant(BrE, informal) extremely good; wonderful指极好的、绝妙的、了不起的：◆'How was the show?' 'Brilliant!'“演出怎么样？” “棒极了！”
awesome(informal, especiallyNAmE) very good, impressive, or enjoyable指极好的、令人惊叹的、极好玩的：◆The show was just awesome.演出实在棒极了。
epic(informal) very good, impressive or enjoyable极好的；给人深刻印象的；令人愉快的：◆The adventure and action are truly epic in scope.惊险刺激的动作场面的确壮观。
Patterns
to have a(n) great/cool/fantastic/fabulous/terrific/brilliant/awesome time
to look/sound great/cool/fantastic/fabulous/terrific/brilliant/awesome