许久xǔjiǔTop 15000Meanings1. for a long time2. for agesCharacters used许to permit久longExamples1我wǒ昨天zuótiān遇到yùdào了le一个yīge许久xǔjiǔ不见bùjiàn的de老朋友lǎopéngyou。Yesterday I met an old friend of mine whom I had not seen for a long time.