It is not fair for him to be permanently unfriendly to someone who has hurt him. [+ to]

他对伤害过自己的人永远存有敌意，这样是不对的。

People always complain that the big banks and big companies are unfriendly and unhelpful.

人们总是抱怨大银行和大公司不友善、不愿提供帮助。

Judy spoke in a loud, rather unfriendly voice.

朱迪说话时声音很大，十分不友好。