形容词

1. 不友好的；不友善的；有敌意的
If you describe a person, organization, or their behaviour as unfriendly, you mean that they behave towards you in an unkind or rather hostile way.

1. not disposed to friendship or friendliness

e.g. an unfriendly coldness of manner
an unfriendly action to take

2. not easy to understand or use

e.g. user-unfriendly

3. very unfavorable to life or growth

e.g. a hostile climate
an uncongenial atmosphere
an uncongenial soil
the unfriendly environment at high altitudes

Synonym: hostileuncongenial

4. not friendly

e.g. an unfriendly act of aggression
an inimical critic

Synonym: inimical