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Adjective: unfriendly (unfriendlier,unfriendliest)  ,ún'frend-lee
  1. Not easy to understand or use
  2. Not disposed to friendship or friendliness
    "an unfriendly coldness of manner"; "an unfriendly action to take"
  3. Not friendly
    "an unfriendly act of aggression";
    - inimical
  4. Very unfavourable to life or growth
    "the unfriendly environment at high altitudes";
    - hostile, uncongenial

Derived forms: unfriendlier, unfriendliest

See also: beetle-browed, chilly, cool, friendliness, hostile, incompatible, inhospitable, scowling, uncongenial, uncordial, unneighborly [US], unneighbourly [Brit, Cdn], unsociable

Antonym: friendly

Encyclopedia: Unfriendly