adjective, -li⋅er, -li⋅est, adverb | 1. | not amicable; not friendly or kindly in disposition; unsympathetic; aloof: an unfriendly coldness of manner. |
| 2. | hostile; antagonistic: an unfriendly act of aggression. |
| 3. | unfavorable; inhospitable or inimical, as an environment: an unfriendly climate for new ideas. |
| 4. | in an unfriendly manner. |