If you describe a person, organization, or their behaviour as unfriendly, you mean that they behave towards you in an unkind or slightly hostile way.
双语例句
例： Some people were unfriendly to the new recruit.
一些人对新成员不友好。
例： People always complain that the big banks and big companies are unfriendly and unhelpful.
人们总抱怨大银行和大公司不友好，不愿给予帮助。