adverb, adjective, noun, punctuation, verb · about to happen in a short time; nearly

春天快来了，树木都长出了嫩绿的新叶。

adjective, adverb, punctuation, verb, modal particle · moving or operating at high speed; rapid

他跑得很快。

adjective, punctuation, noun · feeling pleasure, gratification, or satisfaction

考试得了一百分，他心里甚快。

adjective · having a keen edge or being mentally agile

这把菜刀磨得很快。

idiom · straightforward and candid in speech or character

他这人向来快人快语，性格非常豪爽。