unfriendly
adjective
1. not easy to understand or use
- user-unfriendly
2. not disposed to friendship or friendliness
- an unfriendly coldness of manner
- an unfriendly action to take
Similar word(s): incompatible, uncongenial, scowling, chilly, uncordial, unneighborly, unneighbourly, inhospitable, hostile, unsociable, cool
3. not friendly
- an unfriendly act of aggression
Similar word(s): hostile, inimical
4. very unfavorable to life or growth
- the unfriendly environment at high altitudes
Similar word(s): inhospitable, hostile, uncongenial
noun
1. An enemy.