unfriendly

Adjective

• very unfavorable to life or growth
  • a hostile climate
    
  • an uncongenial atmosphere
    
  • an uncongenial soil
    
  • the unfriendly environment at high altitudes
    

• not friendly
  • an unfriendly act of aggression
    
  • an inimical critic
    

• not disposed to friendship or friendliness
  • an unfriendly coldness of manner
    
  • an unfriendly action to take
    

• not easy to understand or use
  • user-unfriendly
    

Related words

• Synonyms: 
  hostile , uncongenial , inimical