unassuming /ˌʌnəˈsjuːmɪŋ/ TEM8

• 1. 

  ADJ If you describe a person or their behaviour as unassuming, you approve of them because they are quiet and do not try to appear important. 不装腔作势的; 谦逊安静的 [表赞许]

  例：

  He's a man of few words, very polite and unassuming.

  他不爱说话，非常有礼貌，也不装腔作势。